Saturday, October 18, 2008

Choosing a good laser eye surgeon

Choosing a good laser eye surgeon

Improving your vision with a Lasik procedure could be one of the greatest gifts you could get for yourself.  However, as my mother used to say, "Your eyes are precious."  It is important to entrust the Lasik operation to a doctor that you trust and have confidence in.

Let's begin with three factors that should NOT be the sole reason you select a doctor for the Lasik procedure.  The location of the office is not particularly important, and a number of people travel long distances to have the Lasik procedure done, for a truly professional doctor will only need to be visited two or three times.  Also, cost or the type of Lasik technology used should not be the sole factor.  The range in surgical skill for a Lasik operation does vary, and there is the old saying "you get what you pay for."  Further, though the newer types of Lasik procedures do have their benefits; many eye doctors in a large metropolitan area often offer two or three Lasik variants.

There are several ways to determine which is the best doctor for you in your area.  One of the qualities to look for in a good Lasik physician is someone who can accurately assess your situation, and advise you if Lasik is even a good choice for you and your lifestyle.  A physician that takes the time to discuss your own physical condition and situation with you is a good indicator that this is a Lasik physician that you can rely on.

Look for a Lasik eye surgeon which has a solid reputation in the area, and has a good track record.  A physician that advertises in a magazine is not a sufficient recommendation to put your trust in that doctor, and needs more investigation before agreeing to have him do your Lasik procedure.  Sometimes a Lasik center with a large advertising campaign and discounted prices may be indicating that the quality of the surgery is not excellent, and this could be a red flag to avoid that center.

A good Lasik doctor should be involved in the entire Lasik process.  As mentioned above, he should take time to assess your particular case and discuss it with you.  Not only should he do the exam, but he should also perform most or all of the preoperative exam, and also should meet with you personally to monitor the success of the procedure at the dates for checkup.  There are stories from some Lasik centers of the patients never seeing the physician again after the operation until they complained strenuously of some particular problem.

Make sure the physician is honest in their assessment of the general Lasik procedure, and his track record in particular.  Ask for individual examples of patients that the physician dissuaded from having the Lasik operation, and why.  Ask how many Lasik procedures the doctor has done in total, and how many in the last two years.  An experienced surgeon should have performed in the neighborhood of 1000 Lasik procedures, with at least 500 of those in the last two years.

Use these questions as a starting point to investigate the Lasik eye centers in your area, and even the highly recommended ones in nearby major metropolitan areas.  It will be time well invested, and the first step to a clearer future.

Eye Care

Eye Care

Regular eye exams are important even for people who are not having eye trouble. These are in-depth routines that are normally performed by either an Ophthalmologist or Optometrist. How often a person needs an eye exam hinges on a number of elements including age, overall health and whether or not eye disorders run in the family.

Kids with no eye trouble need only have their eyes checked out during regular visits to their pediatrician. This evaluation is ordinarily referred as a vision screening and ought happen at a minimum, every 2 years. A vision screening isn't as across-the-board as an eye exam, but it is priceless in noticing early signs of eye/vision trouble.

For grownups without eye trouble, eyes ought be tested once between the ages of 20-29, twice during the next 10 years, 2-4 times during the next 10 years and after age 65, eyes should be examined once every 1-2 years. People wearing corrective lenses should have their eyes tested annually. Those with eye disorders should work out an testing schedule with their eye doctors.

What is involved in  an eye exam

Employing a light source, an external examination ascertains that the eyes 'look' right. You will follow the doctor's pen (or other object) with your eyes to ensure the eye muscles function properly. Whilst you read the illuminated chart with letters that get smaller the further down you go, your doctor is checking out your visual acuity. If you need corrective lenses, you'll get a refractive appraisal, a test that determines how light wave bend. The outcomes of these tests help the doctor decide your prescription. He may put a Phoroptor, a device that resembles a big black mask, over your eyes in order to fine-tune these measurings.

Your peripheral vision will be screened. A slit lamp exam uses a microscope that emits a sharp ray of light to evaluate the cornea, lens and iris. The back of the eye is also analysed and lastly your eyes will be tested for glaucoma.


Differences between the eye care specialists.

Ophthalmologist
vs. Optometrist

The duties and skills of an Ophthalmologist and an Optometrist are generally different, all the same just about most people erroneously use these terms interchangeably. Both professions involve eye care nonetheless the primary difference between the two is the presence of a medical degree. It's this degree that denominates an Ophthalmologist as a medical doctor who's been trained in all areas of eye care including the power to diagnose and care for eye disorders and diseases.

Ophthalmologists are qualified to perform eye surgery and they likewise know how to conduct proper eye measurements so they can precisely prescribe corrective lenses. Their training helps them administer advice for preventing blindness and also enables them to attend to those who are blind. In addition to advanced educational training, Ophthalmologists must be trained in clinical and surgical settings.

Optometrists routinely perform eye tests. During such eye examinations, Optometrists will also find out the need for, fit and prescribe corrective eyewear and/or lenses. Optometrists can likewise screen patients for certain eye disorders.

Information on LASEK Laser Eye Surgery

Information on LASEK Laser Eye Surgery

LASEK (Laser Epithelial Keratomileusis) laser eye surgery takes the most beneficial elements of two other types of laser eye surgery and combines them into one very effective surgical procedure. These other two laser eye surgeries are LASIK and PRK.

Unlike the LASIK procedure which involves using a sharp blade to slice off the top of the cornea, LASEK uses a solution consisting of diluted alcohol to loosen a thin layer from the epithelium so that it can be moved off to the side.

Benefits of LASEK laser eye surgery

One benefit of LASEK laser eye surgery is that it eliminates the risks associated with the corneal flap. With LASIK surgery, a very sharp blade called a microkeratome is used to cut the corneal flap. There have been cases in which the flap was cut too deeply or cut off completely instead of leaving it attached with a hinge, both of which are capable of causing any number of serious vision problems.

Healing is faster with LASEK because there is no cutting and because the epithelial flap can be used somewhat as a natural bandage after the procedure is finished. And unlike PRK, the chances of developing a glare after the operation are greatly diminished when using LASEK.

Risks/disadvantages

Risks associated with LASEK laser eye surgery are greatly diminished mainly due to the fact that no sharp device is being used to cut the cornea. There is some pain but it is minimal and is most often treated with over the counter medicines. Also, it is not possible to guarantee any type of vision results and glare, halos and dry eyes are potential side effects.

The LASEK procedure

Prior to the LASEK procedure, a patient must provide the eye surgeon with a complete medical history. Eye tests and other diagnostic procedures are undertaken to ensure the patient is a good candidate for LASEK laser eye surgery. On the day of the procedure, the eye is cleaned and prepped and an eye drop to numb the eye is administered. A special tool will hold the eyelids in place, preventing them from blinking.

The diluted alcohol solution is applied, the epithelium loosens, and it is gently pushed out of the way. The pre-calculated beams of ultra violet light are then pulsed onto the cornea and in just a minute or so, the procedure is complete.

Most patients will have blurred vision at first and won't be able to drive home from the procedure. Most need a day or two to rest. Vision will vary over the ensuing months.

For best results, always use an eye surgeon who has experience with the LASEK laser eye surgery procedure. Never be afraid to ask a surgeon you're considering for the names and contact information of previous patients. If you get a list of contacts, be sure to call and ask about their experiences.

Friday, October 17, 2008

About Epi-LASIK Laser Eye Surgery

About Epi-LASIK Laser Eye Surgery

The most advanced of the surgical eye procedures using laser technology, Epi-LASIK laser eye surgery combines the best of traditional LASIK surgery with the best of the LASEK and PRK laser procedures. Epi stands for Epithelial and LASIK stands for Laser in situ Keratomileusis. Basically this newest procedure involves gently separating the epithelial from the top of the cornea using an epikeratome rather than slicing the top of the cornea and creating a hinge as is the case with LASIK.

A good candidate for Epi-LASIK laser eye surgery is someone who has a very thin cornea and who also has mild to moderate farsightedness, nearsightedness or astigmatism. As with the other types of laser eye surgery, best vision is achieved by using laser beams to reshape the cornea.

Benefits of Epi-LASIK laser eye surgery

The two main benefits of the Epi-LASIK procedure are its quicker recovery time and the speed at which vision is restored. Because the cornea is not cut with a microkeratome (a sharp blade) the cornea does not have to heal. And because only a thin layer of the epithelial is separated, it too has the ability to heal quickly. This type of procedure eliminates the potential risks associated with incorrectly cutting the cornea, which in some cases can cause a number of vision problems including a permanent loss of vision. There also is less pain.

Risks of Epi-LASIK

While no surgical procedure is without risk, proper candidate screening including thorough diagnostic testing will significantly reduce the risks associated with Epi-LASIK surgery.

The Epi-LASIK procedure

As with the other laser eye procedures, the Epi-LASIK procedure also takes less than 10 minutes to complete. Anesthetic drops are placed into the eye to minimize pain and discomfort. From there, the epithelial must be moved off to the side so that the laser can reach the intended target area.

Specialized equipment is used to first stabilize the eye. Then, the epithelium separator makes a pass across the eye and flattens the cornea which makes it easier to separate the epithelial. It is not separated completely, rather it remains attached in the middle instead of at one side as happens with the LASIK procedure. A small spatula-type tool is used to move the flap out of the way.

The laser then begins emitting pulses of ultraviolet light, quickly removing the excess tissue from the cornea. As the laser pulses, the cornea is being reshaped. This continues until the proper amount of excess tissue is removed, as determined by the eye surgeon. When finished, antibiotic drops are placed in the eye to protect against infection, and a contact lens-like bandage is applied. Those opting for the Epi-LASIK eye surgery can usually resume normal activity the day after the procedure. Several follow-up visits are required to monitor healing and vision.

It's important to choose an Epi-LASIK eye surgeon with care. Discuss the surgeon's experience with this type of procedure including success rates. Also discuss the type of care that will be provided during all stages: before, during and after the procedure and associated costs.

Lasik eye surgery

Lasik eye surgery

Advertisements for LASIK surgery are everywhere. Anyone who wears contact lenses and eye glasses can relate well to the feeling of finally being free of the maintenance and bother involved in wearing either. As tempting as the advertisements are, LASIK Surgery may not be right for everyone.

Understanding LASIK Surgery

LASIK is the acronym for laser in-situ keratomy, eye surgery involving use of a powerful laser called an Excimer. The Excimer has been designed especially for working in the delicate eye area. The laser works quickly to reshape a person's cornea, which generally is all that is needed to correct myopia (known also as nearsightedness), hyperopia (farsightedness) and astigmatisms.

Reshaping the cornea generally is a simple matter of removing excess tissue from beneath the cornea. In order to get at this tissue, a tiny flap must be pulled back from the cornea's surface. The laser can create this flap, and so can a tool called a microkeratome blade.

Laser pulses zap as much excess tissue as the ophthalmologist determines after reviewing a very detailed image of the cornea called a corneal topography. In literally a matter of minutes and often without feeling any pain, the shape of the cornea is corrected and vision restored. In fact, vision is usually restored so quickly that a patient can drive him or herself home from the procedure.

Deciding on LASIK Surgery

One of the biggest decisions a person interested in LASIK Surgery needs to make is whether this type of eye surgery is affordable. It is categorized as a cosmetic type of surgery and therefore many health insurance plans won't provide coverage.

The costs for this surgery vary considerably, but generally the costs of using a reliable and knowledgeable ophthalmologist will run several thousand dollars – per eye! So cost is definitely one big consideration.

If it's decided that the costs are justifiable, there are some individuals for whom this type of surgery may not be effective. Only healthy eyes and eyes that have stopped changing can be operated on. There also are certain prescription limitations which automatically disqualify a patient from this type of surgery.

A comprehensive review of a prospective patient's medical history is undertaken prior to LASIK Surgery. A number of tests are also performed at an initial consultation for the purpose of detecting eye problems and/or diseases which could affect the surgery. Due to hormonal considerations, LASIK Surgery cannot take place when a woman is pregnant or when either a man or a woman has a compromised immune system as this condition could jeopardize the eye's recovery.

To summarize, if such a procedure is affordable and the eyes meet the procedure requirements, LASIK Surgery may be a good option to pursue. The surgery itself has a very high success rate and combined with the fact that it's practically painless, it probably makes sense to give it a try.

The next section will review the different types of LASIK eye Surgery that are available and the risks and possible complications of each.  

Contact lenses and children

Contacts lenses and children

There's no age restriction on contact lenses for kids. In fact, even very young children can wear them and many do for a variety of reasons. How can one decide whether contact lenses for kids make sense? Like any decision, it's important to consider the benefits against the disadvantages.

Contact lenses for kids make sense for the same reasons they do for adults. They help enhance appearance, they are comfortable to wear and they are a good choice for improving vision. Add to these reasons the facts that fitting a child isn't an issue and that children have all the same options as adults including daily wear, extended wear, continuous wear and disposable and it's difficult to argue against contact lenses for kids.

Kids who participate in sports find that wearing contact lenses is much easier than dealing with the hassle involved in wearing eyeglasses. Eyeglasses and sports aren't always a good match. They break more frequently and replacing children's eyeglasses isn't cheap!

Kids can be cruel, and children who wear eyeglasses find that they're frequently subjected to unnecessary taunting and name-calling. Such behavior can seriously impact a child's self-esteem and confidence, especially when they're young and don't know how to disregard the words being said.

Studies have shown that contact lenses for kids, in particular rigid gas permeable styles, have the added benefit of helping to keep nearsightedness from progressing. 

There is something else to consider before making a final decision, however. Although a child's age isn't necessarily a consideration, a parent may wish to consider a child's maturity level. With the decision to wear contact lenses comes an understanding that the wearer has certain responsibilities that must be upheld. Since no two children mature at the same pace, a parent really is the only person who can make this determination.

It helps to think about the ways in which the child does or does not currently show responsibility. For example, how is the child at caring for pets, or at finishing chores or at completing school assignments?

If a child isn't yet mature enough to handle the responsibility, the parent then has to determine whether he or she is willing to take responsibility for cleaning, maintenance, insertion and removal of the contact lenses and also for scheduling eye examinations and follow-up visits as necessary.

If a child is mature and is motivated, that child likely will be a good candidate. And since most children take instruction well, especially when someone other than a parent gives it, they generally are very good at wearing and caring for contact lenses as they've been instructed by the eye doctor.

Contact lenses for kids do present the same risks as adults have including a higher incidence of eye infection, dryness or abrasion. Some children, even though they may be very motivated, are not good candidates for wearing contact lenses either.

As always when in doubt, talk the decision over with someone who has experience prescribing contact lenses for kids.

How conjunctivitis affects your eyes.

Eye Care – Conjunctivitis

What is Conjunctivitis?

Conjunctivitis is an eye problem in which the conjunctiva, which is the mucous membrane that covers the eyelid and the white part of both eyes, becomes inflamed. There are two main types of Conjunctivitis, or pink eye as it is more commonly referred to. The first results from a bacterial or viral infection and the other results from an allergic reaction.

The infective form of Conjunctivitis, if it's caused by bacteria, is highly contagious with the hands being the primary vehicle for transmission. Conjunctivitis that results from an allergic reaction is typically a seasonal condition as are most allergies.

Conjunctivitis can also result when a person is sensitive to certain facial products and cosmetics. This latter form is sometimes referred to as irritant Conjunctivitis. Allergic and irritant Conjunctivitis are not contagious.

Symptoms of Conjunctivitis

The symptoms of the infective form of Conjunctivitis include discharge that is watery or sticky, eyes that water and feel gritty, and eyes that feel as if they have been glued together upon waking. Mild soreness is sometimes a symptom. The part of the eye that is normally white will also become red or pink, which is why Conjunctivitis has earned the nickname 'pink eye'. Because Conjunctivitis often develops along with a common cold, a person may also have symptoms of a cold including runny nose, mild fever and a sore throat.

With the allergic form of Conjunctivitis, eyes are itchy and the eyelids may appear puffy. There may also be a discharge from the eyes that appears white or watery or ropy.

Who is at risk?

Anyone is at risk of getting Conjunctivitis. Because it can be contagious, a person with Conjunctivitis needs to take measures not to spread it. It's difficult because it is normal to rub the infected eye as a way of providing temporary relief. However, if hands are not washed afterwards and the cause is bacterial, the bacteria can be transferred to another individual by coming into contact with the infected hands.

People who have a history of allergies, particularly hay fever, are at increased risk of developing the allergic form of conjunctivitis.

Early detection/treatment

Infective Conjunctivitis with its notable pink eye often will accompany a common cold making this eye problem rather easy to identify. Likewise a person with known allergies knows whether or not he has allergic Conjunctivitis.

Treatment for infective Conjunctivitis that is caused by bacteria includes the application of antibiotic ointment or antibiotic drops. If it is caused by a virus, typically the condition is left to heal on its own, much like a cold. Generally however, it is difficult to determine whether infective Conjunctivitis has resulted from bacteria or a virus so oftentimes, no treatment is prescribed.

In either case it is important to wash hands after coming into contact with the infected eyes using warm water and soap. Those with infective Conjunctivitis should not share their towels or pillows with others. Also when Conjunctivitis is present, contact lenses should not be worn until it has cleared.




Colored Contact Lenses

Colored Contact Lenses

Changing your eye color to match your mood or your outfit with colored contact lenses has never been easier! They are a great fashion accessory and even if you don't need them for vision corr, that doesn't matter. You can still get colored contact lenses in an assortment of vibrant colors.

Right now it's estimated that only a small percentage of contact lens wearers realize they're good candidates for colored contact lenses. Most don't realize that there's been an explosion of availability and that now almost every contact lens prescription is available in practically every standard color option. And even when people do realize this, many are hesitant to give colored contact lenses a try. But don't worry. The color change can be subtle or it can be dramatic and that's part of the fun of wearing them.

Even though you may not need them to correct your vision, if you want colored contact lenses you will have to visit an eye doctor to obtain a prescription. A prescription for contacts that doesn't include vision correction is called a plano prescription. This type of prescription measures the width and the curvature of the eye and will insure that the contact lenses fit properly. If they don't fit right you'll know in a moment because the pain will be persistent and irritating.

Unfortunately, there's a belief among wearers of colored contact lenses that because a pair lacks vision correction it's okay to share the contact lenses with others. This is wrong! Under no circumstances is it ever a good idea to share contact lenses so don't. Not only might they be the wrong size and cause discomfort, if they haven't been cleaned, the other person likely will introduce harmful bacteria into the eyes which can cause irritation and other eye problems.

Within the world of colored contact lenses you'll find many options and it's important to understand what these options are. For example, opaque colored lenses are absolutely necessary when a person wants to completely change eye color. Colored lenses are actually tinted, and besides changing color you'll find other types of tints, some of which aren't necessarily designed to change eye color.

One of the benefits of a visibility tint is that the tint makes the lenses easier to handle by making them easier to see. Clear contacts can end up anywhere when they're dropped and they'll be invisible and nearly impossible to find. But the colored tint on the lens will help pinpoint their location. Enhancement tints have a deeper tint that will enhance and intensify a person's eye color.

Lenses that are coated with UV/UB protection tints are preferred among those who participate in outdoor sports. The tints help to reduce glare which improves vision and hopefully the game. And speaking of sun protection, there is a brand of colored contact lenses that darken to a color that resembles that of sunglass lenses when exposed to light. Once inside, the color transitions back into clear.

Information on Corrective Eye Surgery

Information on Corrective Eye Surgery

Several types of correct eye surgery exist today and these different types of corrective eye surgery fall under two main categories: Excimer Laser procedures and Non-Excimer laser procedures. As is the case with other conditions that affect the body, major technological advances have been made in recent years in the field of corrective eye surgery. The following is a brief introduction to the two categories.

Excimer Laser Procedures

An Excimer laser is a tool that was approved for the treatment of nearsightedness ranging in severity from mild to moderate. Use of the Excimer laser is complicated and it's important to work with ophthalmologists who are both trained in the surgical procedure and who have demonstrated the ability to properly operate and calibrate this precision instrument.

The Excimer Laser was originally approved for PKR, or Photorefractive Keratectomy and its usage was later expanded for LASIK procedures, or Laser in situ Keratomileusis. With PKR, the cornea is reshaped by eliminating excess tissue from the cornea's outer surface. With each computer calculated lightening-fast laser pulse, a microscopic ultraviolet light beam removes the excess tissue. After only a few minutes and the application of local anesthesia, the procedure is over. In just a day or so, patients can resume normal activity.

In a LASIK procedure, the eye doctor rather than the laser's built-in computer determines where incisions will be made and how much tissue will be removed. This is a more complex and invasive procedure and it is one that is recommended for more severe refractive conditions. Using a microkeratome (a knife), the eye surgeon slices and then pulls back a flap of the tissue covering the cornea. With the tissue out of the way, the laser is then used to remove tissue and reshape the cornea. The flap is put back into place and the patient typically can see well enough to drive home after the procedure. LASEK and epi-LASIK are variations of the LASIK procedure.

Non Excimer Laser Procedures

These are procedures that rely on artificial implants, surgery and reshaping to correct eye problems. Lens implants are effective for individuals who have cataracts, nearsightedness and farsightedness. Intraocular lenses or IOLs are used as replacements for the damaged cloudy lenses caused by cataracts. New and improved artificial lenses now incorporate the use of hinges that allow the eye to move and act like a real lens.

Other types of implantable contact lens can correct nearsightedness and farsightedness. They act much like removable contact lenses but require no maintenance and wearers cannot feel these lenses and implants.

Thermokeratoplasty involves the use of heat to manipulate the collagen within the cornea. In doing so, refractive errors can be corrected in a matter of minutes. There are two types of Thermokeratoplasty procedures. Laser thermal keratoplasty or LTK involves the use of holmium YAG laser and CK or conductive keratoplasty involves use of radiofrequency waves.

Astigmatic Keratotomy (AK) involves cutting the cornea in order to reshape it. However, its use has diminished since laser treatments involve less risk and are far more effective at reshaping the cornea.



Wednesday, October 15, 2008

Information on Cataracts and Cataract Surgery.

Eye Care– Cataracts and Cataract Surgery

More than 60 million individuals around the world have cataracts. Cataracts are the #1 cause of blindness but fortunately, cataracts are highly treatable with cataract surgery.

What is Cataract?

Over time the eye's lens, which is transparent in a healthy eye, starts to become cloudy or opaque. As individuals age, protein levels in the eye begin to decrease which is why there is no way to effectively prevent cataract from developing. Other factors can cause cataract such as head injury and certain diseases, but their appearance is primarily due to age.

There are 3 different types of cataracts and each type affects a different part of the eye. At the center of the lens is the nucleus and the most common of the cataracts affects this region. Cortical cataract and subcapsular cataract are more common in individuals who have diabetes.

Symptoms of Cataract

Vision that is cloudy or blurred is the most obvious symptom of a cataract. Nearsightedness can increase and images that were once clear can appear distorted when cataract is present. Less noticeable symptoms include the need for more and brighter light when reading, sensitivity to light, trouble seeing at night, double vision and colors that fade or seem 'yellow'. These symptoms develop because the cloudiness on the lens prevents it from refracting light properly.

Who is at risk?

Everyone is at risk of developing cataract and the likelihood that this type of eye problem will develop increases with each passing year. Simply stated, anyone fortunate to reach old age will likely develop cataract.

Risks increase if there is a family history of cataract. Steroids and some medications can also increase the chances of developing cataract as can eye injury or previous eye surgery. Those with diabetes also have an increased risk.

Early detection/treatment

A routine eye examination is the most effective way of detecting the presence or development of cataract. Because blurred vision can be caused by a number of factors, proper diagnosis is important.

It used to be that a person with cataract in one or both eyes would have to endure painful surgery to remedy the situation. But today, cataract surgery is an outpatient procedure that involves replacing the cloudy lens with an intraocular lens (IOL). The success rate of cataract surgery is extremely high. And surgery is the only option.

Cataract surgery is not recommended until the loss of vision becomes troublesome and impacts quality of life. Cataract generally develops gradually so in many cases, vision in the early stages can be corrected with prescription eyeglasses. An ophthalmologist can determine the stage at which cataract surgery is necessary.

It's important to note that some people with cataract also have other types of eye problems. For them, cataract surgery may not restore vision. Again, an ophthalmologist can help with this determination.

When cataract surgery is performed, an amazing 95% of the surgeries involve no complications whatsoever. Local anesthesia, tiny instruments and a microscope are generally all that is needed to perform successful cataract surgery.

Monday, October 13, 2008

Contact Lenses and How The Eye Works

Contact Lenses and How The Eye Works

The human visual system is both simple and complex. Complex, because there are so many parts that have to work together to make sight possible. Simple, because those parts and the process can really be explained without in-depth knowledge of anatomy and biology.

An ordinary glass lens, such as a magnifying glass, focuses the light that moves through it by bending the rays toward a focal point. That's the bright spot you see when you hold one over a newspaper, for example. Something similar happens when light enters the eye through an opening called the pupil, behind a clear protective portion called the cornea.

The pupil is surrounded by the iris, the colored portion of the eye. The pupil can narrow or widen to regulate the amount of light admitted, from as small as about 2mm to as much as approximately 8mm. The iris contains the muscles that change the diameter of the opening. Just behind the pupil is the lens, the part that focuses the light rays similar to the magnifying glass.

But there's an important difference between a magnifying glass and the eye. The magnifying glass's focal point is fixed. The eye, by contrast, contains muscles that help shape the lens and that shaping process performs a number of important tasks. Most importantly, it makes it possible for the focal point to change.

A camera lens is a good analogy. Because the camera lens contains multiple pieces of glass that can be moved by turning the barrel, objects at different distances can be brought into focus on the film. The muscles attached to the lens perform a similar function in order to focus light onto the retina, which is like the film.

Focused light rays strike the cells of the retina, the cones and rods. The names come from the shapes of the cells. The cones - 7 million cells in the central part of the retina, called the macula - are responsible for sharp, detailed vision and color vision. The approximately 100 million rods around them help us see in dim light and provide peripheral vision.

When those focused light rays hit the cells chemical reactions occur that stimulate the optic nerve attached to the back of the retina to produce electrical impulses. Those impulses are then transmitted to the visual cortex, the part of the brain that organizes them. Many parts of the brain cooperate to cause the mind to conclude: 'Ah, a car.' But the visual cortex does the initial heavy lifting.

When the parts and process of vision work correctly, you see sharp, colored entities out in the world. When things go wrong, the need for contact lenses or eye glasses arises.

Our Eyes, What Is The Mystery Beyond The Pupil?

This mystery goes straight from the eyes to the brain...and then, where does it go from there?

I am searching and delving into the mystery of the eye.  How is it that our eyes are an actual extension of our inner being, a mirror to our soul and spirit?  What is it that our eyes are connected to that gives them so much life?  So much expression?

The eyes, as we all know by now, are more efficient than any computer created by man. We already know that the eyes are connected to the brain, physically.  This connection makes the difference between what we see, and how we interpret what we see.  The eyes look...the bran tells us what we see when we look.

This is where the vast field of illusions comes into being.  We see what we see, our eyes do not fool us, but our brain does, it turns around and says “nope, that is not what you see...this is what you see”.  Amazing isn’t it.  Our brain and our eyes are at war.  Mostly the brain wins.

But, where does the physical eye connect to so that we are able to see hate in someone's eyes?OK, let me put that another way.  How is it possible that we can express emotions in our eyes?  I mean, to actually see this emotion in the physical appearance of the eyes.  Where does that come from?  How does that happen?

This is why we all like to look into each others eyes when we talk.  When we love someone, we can stare for hours into our partner's eyes.  Obviously, it’s not just to look at two marble like objects.  So, where do our eyes connect so that we can see love in each other, actually see love physically?

What's that about, that our eyes can connect to our soul, our spirit, and convey what we feel?

I remember on one occasion, at someone's funeral, it was the first time I had a true glimpse into a friend's soul, just by looking into their eyes.  It is a moment I will never forget. EVER!

What about when you look at someone and you see hate?  Is that person allowing you to see this emotion, or, is this emotion a part of the natural process of us being human, and so it naturally shows itself?

We see hate in the eyes, we see love, fear, compassion and even confusion in the eyes.

How often have you looked deep into a friend’s eyes, and seen tenderness?

The eye is a little oval object in our body.  Yet, it seems to be able to hold the very essence of our being at any given time.

This mystery goes straight from the eyes to the brain...and then, where does it go from there?

Keep your eyes healthy for as long as you can.  Become pro-active in your eye care

Laser Eye Surgery Facts Help Patients Understand The Process

People who grow tired of wearing glasses or believe they look better without them may turn to corrective surgery using laser technology to restore their visual acuity. Before heading out to an all-night laser surgical center people need to get all the laser eye surgery facts they can find to insure they are making the right choice. Not everyone will make a good candidate for lasik surgery and by perusing the available laser eye surgery facts people can quickly determine if they qualify. They can then read about what to expect to determine if they want to follow through with the operation.

Pointing to the success rate of the procedure there are several laser eye surgery facts. Learning what can be expected before the surgery, during the surgery and the appropriate follow up care is an important part of the decision-making process and the laser eye surgery facts can help provide that information as well. If it is being done strictly for cosmetic purposes most insurance policies do not cover the surgery.

Those who wear contacts might have to wait while their eyes return to their normal shape before having the surgery performed, meaning they will have to wear glasses until the day of the operation. They may also have to wear glasses to correct the vision in the one eye that is not corrected according to the available laser eye surgery facts.

Success Rates Are In Potential Patients' Favor

Despite the risks associated with laser surgery, the lasik eye surgery statistics are in favor of the patients as there are many more success stories than there are of surgeries that go horribly wrong. While the risk factors are included in the laser eye surgery facts, the experience and knowledge of the surgeon performing the operation will greatly increase the odds of success.

The patient will be under local anesthetic only with a local sedative for the eye on which the operation is being performed. The patient will go home the same day to begin the healing process in most cases and with the appropriate follow up care, their recovery ends with much better vision then before the operation.

Being able to afford the operational costs may seem daunting for some. The laser eye surgery facts point out that it can be a significant cost savings over the years following the surgery when the cost of eye exams and glasses over their lifetime is calculated.

Thiking about getting laser eye surgery? Check out this awesome no cost article, Laser Eye Surgery Facts. To browse more articles on laser eye surgery visit, http://www.lasereyesurgery.jsgenterprises.com.

Sunday, October 12, 2008

What is a Laser Eye Correction Surgery?

People who need restoration of their normal eyesight can choose to get laser eye corrective surgery. If you have been experiencing severe eyesight problems and you want to cure it in a fast and easy way, then you can decide on a corrective laser eye surgery. You can easily regain the lost vision that you have greatly suffered from for years, by subjecting yourself to a minor operation. You can instantly reverse your vision problems and bring it back to a perfect 20/20 vision, through a simple clinical procedure.

Laser Eye Correction Surgery and its Types

Basically, there are two known types of a laser eye correction surgery, namely: the PRK (PhotoRefractive Keratectomy) and LASEK (Laser Assisted Sub-Epithelial Keratomileusis). The two procedures work in an almost similar way. However, there is slight difference with the use of both techniques. Perhaps the first difference would be the method on how to correct the cornea, and the second would be the healing process.

Both follow the same process of numbing the eye by drop instillation, even though they are considered to be two different procedures. While the patient is wide awake, the first step in the surgery is performed. Of course, the patient should be relaxed at the time of the surgery to ensure safety and security while the procedure is being conducted.

A PRK laser eye correction surgery involves a scraping process or ablation of the cornea to remove the "defective" epithelial lining. In the LASEK procedure, a cutting method is used to create a flap or a new layer of cornea instead. The first step of the procedure is the removal of the topmost lining of the cornea. It will be followed later on by growth of a new layer through the Excimer laser. There are varying degrees as to how the reshaping process should come about in every person. If precise measurements (mapping and reshaping) are used better results are to be expected.

Laser Eye Correction Surgery and its Uses

A laser eye correction surgery can be used for several means. Nowadays, it has been widely used by people to correct the simplest or the most complex of problems. If you are financially capable of a laser eye correction surgery, then you can be ready to eliminate your vision problems anytime you want to. All you need to do is find a good doctor who can perform it on you and the rest follows as your surgeons have planned.

Depending on the cause of the condition, Laser eye correction surgery can be used for blindness. More often than not, the patients who subject themselves to the operation are those who are suffering from eyesight problems. If your vision used to be 70/150, it can easily be corrected by laser to a near 20/20. Truly, the laser eye correction surgery is one of the most useful tools ever innovated in man's history.

If you have been experiencing terrible eyesight problems and you want to cure it fast, then you can decide on a laser eye correction surgery. Visit http://www.lasereyesurgery.jsgenterprises.com for more articles.

Eye Care Exams Help You Maintain Good Eye Sight

Being your windows to the world it is important to keep your eyes in good condition. Remember your eyes are subject to wear and tear be it from the ultra violet rays of the sun, pollution and dust in the air, transmittable diseases or stress from looking at a computer screen all day.

We all regularly go to our family doctors for a physical exam to check how our overall health is.  The minority take their health for granted. Why is it then that many of us exclude our eye sight from the annual checkup? To guarantee healthy and normal vision, an annual visit to your eye doctor for your eye care exam is important.

Our brain receives sensory information from our eyes giving us a clear picture of our surrounds. Therefore keeping them in optimum shape will ensure proper signals being received by the brain insuring consequential action and reactions. If your vision is deteriorating your life performance will be affected.

We recommend that eye care exams should start from a very early age, that is even babies of 2-6 months should have their eyes checked to correct any abnormalities, while children entering primary school and again when entering secondary school should also have eye care exams which will detect any vision problems allowing corrective action to be taken to rectify the problem.

Unfortunately, as we age it becomes more important to have an eye care exam performed yearly, so that every time you visit your eye doctor they can evaluate any changes in your vision condition and help you correct any difficulties that you may have with your sight. Early diagnosis of problems will decrease the chance of severe damage to our sight.

It is proven that Elderly citizens are more susceptible to vision loss, they should be aware that the probability of having vision disorders increases with age, even though you might not be experiencing any problem, therefore you should visit your eye doctor regularly for an eye care exam.

Eye care exams are painless and informative methods for the assessment of your eyes. The eye doctors will test your visual acuity, (the clarity of your vision). During the eye care exam, the doctor will also check the muscles of the eyes, eye pressure, fluid circulation, retina and general condition of your eyes.. The routine eye examination is not painful or uncomfortable.

Doctors Who Do Eye Care Exams

Ophthalmologists are doctor’s who specialize in the comprehensive care of the eyes and visual system in the prevention of eye disease injury. They are medically trained specialists who can deliver total eye care exams, primary, secondary and tertiary care services and diagnose general diseases of the eyes.

Whereas the Optometrist is the health care professional who provides only primary care services. The services included are the comprehensive eye health and vision examinations: treatment and diagnosis of the vision disorders and eye diseases; the detection of general health problems; they prescribe the glasses, contact lenses, vision therapy, low vision rehabilitation and medications.

How Often Should You Have A Regular Eye Care Exam?

If you are having difficulties with your eyes, pain or visual disturbances or any other problem in the eyes, you should immediately make an appointment to see an eye doctor. However, if you are in good health and no known ailments, no vision problems, you can have an eye exam every two to four years provided your age is below forty.  However, for people with diabetes, you need frequent eye examinations to maintain good eye health.

The old adage "prevention is better than a cure”, so make sure you are aware of your vision and if you note any deterioration get on down and have an eye care exam.

Saturday, October 11, 2008

Why Do We BlinK So Often?

We blink so that our eyes are oiled, lubed and filtered.

Blinking, not batting, our eyes will automatically cause two forms of moisture to to develop for our eyes, thast is so they will not dry out and also so no foreign matter will enter our eyes.   Our eyelids, which are really our natural "eyeshield wipers" are really just folds of skin.  These are controlled by our muscles which are so capable of moving fast, that blinking does not even interrupt our vision.

Our eyelids have approximately 20-30 sebaceous, oil-producing glands, these are located between your eyelashes, and they are invisible to our eye. Blinking automatically puts a coating over our eyes.  Mother nature does it best!

Blinking also irrigates the eyes.  The eyelid automatically draws the same fluid we cry with from our tear duct over the eyeball, this irrigates and moisturizes the eyes.

Such an amazing and natural process, our eyes are more complicated than the biggest computer. And, natural vision care is possible.  Become pro-active with your vision care!

Of course the other benefit of blinking is that it stops any foreign object from irritating our eys. Our eyelashes serve as dust catchers.  Wow, the blinking reflex actually causes the eyelashes to automatically lower during exposure to harsh elements.

Also, you may be a "starer":  To break the habit of staring:

(1) Make sure you shift your eyes when focusing on an object. If you stare, you stop the blinking causing stress and eyestrain and eye irritation.

(2) When you find yourself staring, or focusing too long on an object, try to close your eyes for a few seconds (not during a time when it is dangerous to do this, of course).  This will re-establish your blinking pattern.

Do get yourself away from the habit of staring or intensely focusing on an object for long periods of time!

And, for more ways of looking after the health and care of your eyes check out this Rebuild Your Vision Site

Friday, October 10, 2008

How Contact Lenses Are Made

How Contact Lenses Are Made

The history of the contact lens reaches back as far as Da Vinci, who sketched samples as early as 1508. The corneal contact lens was suggested later by the famed mathematician and philosopher Rene Descartes, in 1632.

But the modern contact lens really has its beginning around the turn of the 20th century. Adolf Fick gets the credit for inventing the first practical pair in 1887. But, it was Carl Zeiss, the famed lensmaker, who developed a glass contact lens that fit over the cornea that formed the prototype for all later work.

It was still to be several decades before Touhy invented the first plastic corneal lens, using Plexiglas as a material. In 1954 the keratometer was invented, making it possible to take eye measurements without physical contact, eliminating the need for molds from impressions of the eye. While work began in 1952, it wasn't until 1971 that the modern hydrophilic soft contact lenses came on the market.

That word, 'hydrophilic' (which means 'water loving'), is the key to contemporary contact lenses. Today's lenses are made of a plastic polymer (pHEMA) that allows the contact lens to absorb water. That makes it flexible and therefore comfortable.

Some lenses were formed in a molding process called spin-casting, where the plastic is spun into the desired shape. Today, injection molding is more common. Early methods required final shaping with a lathe, but today the process is so accurate the lenses can be made entirely through molding alone.

The lathe process may still be used in some areas of the world, though, especially for hard contact lenses that still make up anywhere up to 25% of those sold. The percentage varies by country. In this method a small circle called a blank is cut from a plastic rod and fastened onto a lathe with wax. It is spun rapidly and cut using a diamond or laser. The lens is then polished with a specially formulated abrasive.

The lens has to be finished to fit the patient's eye exactly. That's carried out by polishing the result into precise curves on both sides of the lens. Today, a computer controls the process, which is kept accurate by being fed information from the individual patient using data gathered during the eye examination.

The lens is then sterilized, often by being boiled in salt water for several hours, which also softens it. They're then packaged in a glass vial containing a sterile saline (salt water) solution. Because the lens material is hydrophilic it absorbs much of the solution, making it up to 75% water in the end. Because the solution is similar to human tears that moisturize the eye, the contact feels good and works well during use.

Research continues into finding materials that are longer lasting, more comfortable and safer to use. Some relatively recent advances, for example, include the Rigid Gas Permeable lens (RGP) invented in 1979, but marketed much later. They allow more oxygen to pass directly to the eye. That makes them more comfortable and safer to use over the long term.

Disposable lenses continue to advance, adding UV absorption to their attributes. Extended wear lenses, too, have improved in the past few years. Many can now be worn continuously for as long as a week to a month. On the leading edge are new implantable contact lenses that are actually placed into the eye and never require changing or cleaning.

Understanding Laser Eye Surgery Risk

There is nothing better or safer then having perfect vision, when it comes to eyesight. There is a lot more to it then just not having to deal with contacts or glasses anymore and blurred vision can really affect your day-to-day living. You are generally stuck unless you carry around spares, if you break your glasses while out or find that you have dropped a contact.

More and more people are turning to laser eye surgery to correct their vision because of all of the inconveniences of not having perfect vision. There must be an understanding that there is a laser eye surgery risk involved, before anyone goes and makes the leap to perfect vision.

There is a lot that must be clearly understood before taking on such a procedure when  it comes to laser eye surgery risk. When you are dealing with your eyes, you really should pay extra attention to your chance of encountering a terrible risk, as you could be left blind, of course, as with any type of surgery, there are always risks involved. It is much easier to make an informed decision on whether or not you want to go through with the procedure, once the laser eye surgery risk is clearly understood. It is found that even though there is a laser eye surgery risk involved, many people still go through with the surgery and come out with excellent results.

Risks Involved

When speaking of laser eye surgery, most people believe that lasik eye surgery is the only way to go, but that is just one of the many different eye surgery options out there. As with them all, the lasik eye surgery risk is still there and should be thought about carefully.  Most of the eye surgeries have the same type of risks involved, generally speaking. It is important to understand the laser eye surgery risk is there for the few that end up with complications, the chances of true vision-threatening risks are small, but they are still there.

There is the chance of infection, as with any type of surgery, or just the matter of taking a lot longer to heal then expected or desired. there is the small chance that your eyes will be overcorrected or even under corrected, because this type of procedure is not yet a perfect art. Also, a laser eye surgery risk is regression, which means that slowly, over time, the eyes will go back to having the bad vision they started with. Regression is the simplest risk because no real harm is caused and a second surgery is generally acceptable, unlike the other types of risks.

When it comes to laser eye surgery risk, there is a lot that must be clearly known before undergoing such a operation...Read more no cost articles at www.lasereyesurgery.jsgenterprises.com.

Toric Contact Lenses

Toric Contact Lenses

For many years after their introduction contact lenses were able to easily correct nearsightedness or farsightedness, but nothing else. Changing the point at which light rays focus is a fairly straightforward task, though it does require careful crafting of the lens. But correcting some forms of astigmatism still required wearing glasses. Toric contact lenses ultimately solved that problem.

Nearsightedness causes light rays to focus in front of the retina. Farsightedness causes light rays to focus behind the retina. But, astigmatism denotes a condition in which the cornea, lens or the eyeball as a whole is misshapen. The effect is subtle, but small differences in the eye produce a large effect. Light rays get scattered in different directions, not just ahead of or behind the retina. Blurred vision results.

That multiple direction effect makes it more difficult to produce contact lenses (or even glasses) that will correct the condition. Toric lenses solve the problem by combining shapes. Regular contacts are shaped like a portion of a sphere. Toric lenses combine a spherical surface with a toroidal surface. A donut for example is a toroid, so is a cylinder when it wraps around to touch itself.

Though shaped differently, toric lenses are made of the same materials as other contact lens types. So, they can be soft, RGP or hard. But because they are a combination of shapes they can't be allowed to rotate around the eye like ordinary contacts. Also, all toric lenses are designed with multiple powers to tackle more than one vision problem at the same time, such as astigmatism and farsightedness together. Those features make them more difficult to manufacture correctly and eye exams and fitting are more complicated.

As a consequence, toric lenses tend to be more expensive and so are doctor visits to prescribe them. For some with only a mild astigmatism the extra expense can be avoided by using regular contact lenses. To a degree, the cornea will tend to conform to the shape of the lens. If the astigmatism is mild enough toric lenses may not be necessary. Only your eye care professional can say for sure, after an exam.

For those who do need toric lenses, the full range of choices is available and they work very well. Often, those with an astigmatism require contacts that achieve multiple goals. Multifocal lenses are an option. Toric lenses are available in disposable lens types, whether 2-day or 7-day or even 30-day. Many extended wear lenses come in a toric option, too.

For those who want to add a bit of color to their contact lens, toric styles also provide that range of options. Visibility tints make lenses easier to see, making them easier to handle and harder to lose. Enhanced or full color tints can subtly influence eye color or change it entirely. Colored toric lenses are available for that, too.

Check out the full catalog of choices in toric contact lenses and you're sure to find one just right for you.

Wednesday, October 8, 2008

What causes Blepharitis?

Eye Problems – Blepharitis

What is Blepharitis?

When the eyelids can become inflamed, the problem in most cases is a chronic eye disease called Blepharitis. Similar in nature to the skin condition called eczema, in case of Blepharitis, the eyelids become red, scaly and irritated.

There are two basic types of Blepharitis: Seborrheic Blepharitis and Staph Blepharitis. The most notable symptom of either type is inflammation on and around the eyelids that can be accompanied by irritation and painful itching. In some cases, tiny ulcers develop along the eyelid margins which are the areas that touch one another once the eyelid closes.

Symptoms of Seborrheic Blepharitis

Individuals suffering from Seborrheic Blepharitis generally also suffer from skin conditions that affect other parts of the body including the scalp, chest and back.

With Seborrheic Blepharitis, there is a problem with the tear film that the body produces to help protect and lubricate the eyes. It can be either a problem with the quality or the quantity but regardless, the resulting tear film causes greasy scales to form at the base of the eyelashes. These scales flake off easily and cause irritation. When insufficient quantities of tear film are produced, usually because the glands are blocked, the eye does not get lubricated properly. The dry spots cause the eyes to feel gritty.

Symptoms of Staph Blepharitis

Staph Blepharitis is actually a childhood eye disease that is caused by a bacterial infection. This condition generally does not go away. Its symptoms include the development and accumulation of crusty material at the base of the eyelashes. The crust often affects a person's ability to open their eyes after sleep. Sometimes, after the crusty matter is removed, tiny ulcers remain that begin to bleed or otherwise ooze. Sties can develop, as can red eye, and the eyelashes can become weak and break. If the infection is not treated properly, over time, the cornea can become scarred.

Who is at risk?

Both adults and children can develop Blepharitis however it is more prevalent in adults. There is an increased risk in children diagnosed with Down's syndrome.  

Early detection/treatment of this eye problem

As with other diseases of the eye, Blepharitis is typically diagnosed during a routine eye exam. Since one cause of this condition is poor hygiene, the most effective treatment for Blepharitis involves keeping the eyelid margin area super clean. To prevent irritation from excessive cleaning, it is often recommended that this area be cleaned with a shampoo that is formulated for babies. A washcloth can also be used to help remove the scaly deposits.

A hot pack or warm compress applied to the affected areas is effective at reducing pain and swelling. When ulcers are present, a hot pack can also help speed the healing process.

When the condition is caused by dry eyes, lubricants are effective treatments. If necessary, antibiotic ointments and creams can be applied to affected areas. Some people are prescribed steroids to help reduce the inflammation however their use should only be a short-term treatment option.  

How does astigmatism affect your vision?

Eye Problems – Astigmatism

What is Astigmatism?

Astigmatism is a common eye problem in which a person's cornea or lens has an irregular shape. These problems are known as Corneal astigmatism and Lenticular astigmatism respectively.

The cornea is a clear layer that completely covers the part of the eye that has color. Ideally, the shape of the cornea is round, like a tennis ball. The cornea's job is to bend rays of light that enter the eye so that these light rays can be better focused on the lens enabling the retina to produce a clear image.

When the cornea has a more oval shape, like that of a football, light cannot focus properly. Instead of one focus point, as is what happens when the cornea is properly shaped, the misshapen cornea focuses light onto two areas of the retina. That is what results in blurred vision and/or the appearance of doubled vision.

Symptoms of Astigmatism

Blurred vision, 'ghosting' or images that are doubled are the most common symptoms of astigmatism. These types of vision problems occur at all distances. Fatigue, eye strain and frequent headaches are other symptoms that may indicate astigmatism.

Who is at risk?

The shape of the cornea can be affected by anything that causes the eyelids to exert excessive pressure on the cornea. Other risk factors for astigmatism include hereditary, poor posture and performing redundant and excessive amounts of up-close work. Those who are nearsighted or farsighted are also at higher risk of developing astigmatism. Other factors that can increase the appearance of astigmatism include head trauma or a cut, tear or scar on the cornea.

Keratoconus, a condition which over time causes the cornea to thin and take on a more cone shape can also cause astigmatism. This condition develops around puberty and affects more women than men. It's also caused by excessive rubbing of the eyes.

Finally, diabetics are at increased risk of developing astigmatism as elevated blood-sugar levels can cause the shape of the lens to change.

Early Detection/Treatment of this eye problem.

A routine eye exam is the easiest way to detect astigmatism. The eye doctor will do a number of tests to determine vision clarity. To determine how light rays focus on the retina the eye doctor can perform a refractive evaluation. Reading the eye chart is a good way to determine visual acuity. Checking eye muscle performance, eye coordination and eye focusing capability are also part of a routine eye exam and can all help determine the presence and degree of astigmatism. Astigmatism is measured in terms of diopters and ranges from mild to severe.

Since astigmatism is an eye condition and not an eye disease, it is highly treatable. Common treatment options include corrective eye glasses and (toric) contact lenses.

Surgical treatment options have been highly successful at correcting the shape of the cornea. Photorefractive Keratectomy or PKR uses laser beams to change the cornea's shape. LASIK surgery involves making small incisions on the sides of cornea using laser beams. With Radical Keratectomy, laser beam incisions are made into the cornea.

The link between allergies and eye problems.

Eye Problems – Allergies

When a person has an allergic reaction, the eyes frequently become affected. Eyes turn red, become itchy and irritated, and they can also become watery. Rubbing the eyes seems to offer comfort, but the reality is that rubbing eyes that are responding to an allergic reaction often compounds the discomfort.

What are Eye Allergies?

Most often, eye allergies accompany nasal allergies, but they can occur without involving the nose. Eye allergies are triggered when an allergen makes contact with the eyes. The mast cells, which are cells inside the eyes, release histamines and other chemicals and their release triggers symptoms including irritation and inflammation.

Conjunctivitis allergies are a specific category of allergies that affect the eyes. Conjunctivitis is generally triggered by an outdoor seasonal allergen such as ragweed or grass. Conjunctivitis allergies are also known as Hay Fever conjunctivitis.

Vernal Keratoconjunctivitis is seasonal in nature and primarily impacts children. With this form of eye allergy, the edges around the outside of the cornea are affected. Atopic Keratoconjunctivitis is similar with the difference being that it affects adults. It is a chronic condition and it's one that can cause the eyes to become scarred if not treated.

Symptoms of Allergies

When exposure to an allergen occurs, the body reacts by releasing histamines. Histamine release causes fluids to build up in the nasal cavity, sinuses and also on the surface of the eye as well as the insides of the eyelids. This release is also a source of significant irritation. In addition to irritation, the eyes may become red and watery, and the eyes and eyelids can become swollen. In addition to the visible symptoms, eye allergies may cause a feeling that something is stuck inside the eye or a feeling that the eye is being scratched. Vision can also become blurry or hazy or otherwise unclear.

Who is at risk?

Any person regardless of age can develop eye allergies.

Early detection/treatment of this eye problem

The most effective treatment for allergies is to stay away from those items that trigger allergic reactions. Many everyday cosmetics including mascara, eye liners and eye brow pencils and face creams can all trigger an allergic reaction. In some individuals, eye allergies can be caused by wearing contact lenses. Dust mites, mold and pet dander can also cause eye allergies.

When allergies are suspected, detection is the key to effective treatment. It's important to note what a person had been exposed to immediately before the allergic reaction occurred. Over time, patterns will become apparent. Once the culprit has been identified, steps should be taken to restrict exposure to the allergen.

Changing the brand of cosmetics and other personal care products can help as can discussing the possibility of obtaining a different contact lens prescription with your eye care professional.

In addition to these changes, over-the-counter antihistamines, decongestants and eye drops can all help alleviate the symptoms of eye allergies. If allergies are troublesome and/or persistent, it may be time to see an allergist who can recommend prescription medications and eye drops to treat the symptoms of eye allergies.

What Is Age Related Macular Degeneration?

Eye Problems – Age Related Macular Degeneration

What is Age Related Macular Degeneration?

As the name implies, Age Related Macular Degeneration (ARMD) is an eye disease that is primarily triggered by age. There are two types of ARMD, wet and dry. Either can affect one or both eyes. The dry form is more prevalent, occurring in 90% of the cases. It's slow to develop and vision loss is gradual, although not necessarily severe. The wet form is much more damaging, causing rapid and severe vision loss.

Even though vision loss is not complete, it is significant enough for an individual to be considered legally blind and for quality of life to be severely affected.

Vision loss is not total because ARMD affects the central vision, not the peripheral vision. When the macula is damaged, a person cannot create a clearly detailed image. Since the macula is in the center of the retina, central vision is affected. The macula is a group of nerve cells that utilize light to create and send images to the retina.

Symptoms of ARMD

Those affected by ARMD will notice a spot in their vision that is clearly indistinguishable. For example, when looking directly at an image of a person, legs and head will be clearly visible, but the body itself, the part right in the center of vision, will appear to be covered with an area that appears either empty or dark. Besides blurred vision, straight lines may seem wavy and a person may not be able to recognize images that should be familiar.

Who is at risk?

Age is a primary risk factor of ARMD, with the majority of the cases developing in individuals aged 60 and over. However, hereditary and the environment can also trigger the onset of the dry form of this eye disease. Females develop ARMD more often than men.

Free radicals cause much of the cell damage that occurs inside the retina therefore cigarette smoking and hypertension increase the risks of developing ARMD. Those who do not eat a nutritionally-balanced diet may also be at risk as they are not providing the body with the antioxidant protection it needs to inhibit the damage caused by free radicals.

Early Detection/Treatment of this eye problem

It's difficult to detect ARMD. The dry form is slow to develop, and generally develops only in one eye. The unaffected eye compensates for the damaged eye, so symptoms are not readily noticeable.

Yellow deposits called drusen on the retina can usually be observed during an eye exam. The eye chart and dilating the pupils are two methods of detection. When wet ARMD is suspected, the eye doctor will use an Amsler grid or fluorescein angiography.

Unfortunately, no treatment can restore this type of eye damage. Glasses will not help, but vision aids and counseling can help a person adjust to life with a reduced vision loss.

Laser eye surgery treatments and photodynamic therapy have had limited success on wet Age Related Macular Degeneration. Other treatment options such as medication and radiation are still being studied.

Monday, October 6, 2008

Lasik Eye Surgery Tips

The eye is a fragile and delicate structure that supplies the brain with information about the world that we see. Problems affecting the eye range from infections to impaired vision. The image forming mechanism of the eye consists of the cornea, iris and retina. Recent technology has made Lasik Eye Surgery an easy alternative to failing eyes and eye care problems. Impaired vision is the result of a problem with the retina and the cornea, since the brain receives and interprets electrical impulses generated by images falling onto the retina.

Long sightedness is a visual impairment resulting from too short a distance in the eye between the cornea and the retina. Focusing the eye on close objects becomes difficult. Conversely, short sightedness is caused by too long a focal length in the eye or excessive curvature. As a result, the eye will find it hard to see objects at a distance. Astigmatism is another vision disorder that results if the eyeball is not a perfect sphere. We cannot see clearly if the eye is not in the right shape to allow proper focusing of the image attributes on the retina.

All these refractive errors can be corrected using lenses. The power of these lenses is prescribed by our ophthalmologist after testing our eyes. Many people do not like to wear prescription glasses because they are a hassle for those with active lifestyles and they tend to become an eyesore in social situations. For people looking for an alternative to wearing glasses, lasik eye surgery is a fantastic option. Lasik eye surgery, also known as laser in-situ keratomileusis, lifts a section of the cornea allowing a laser to remove any exposed tissue before the cornea section is replaced. If seeking an eye surgery that is less painful and faster to recover from, lasik eye surgery is the way to go.

The only major qualification is a thick cornea, so it is ideal for most. People with vision impairments, such as short sightedness and mild long sightedness, tend to show the best results. For individuals who do not wish to wear corrective lenses, lasik eye surgery is a viable alternative. It is recommended however that individuals who have had lasik eye surgery have regular eye exams to prevent complications from arising. It is also important to remember that the eyes should not be rubbed vigorously following the procedure.

http://www.lasik-pages.com

 

Understanding There Are Lasik Eye Surgery Side Effects

Whether you are going for a major surgery that involves an extended stay in a hospital or you are going to the eye doctors for lasik eye surgery, there are always risks involved and it is important to make sure that you have done your homework so that you are fully aware of what you are getting into. Lasik eye surgery side effects are a real thing and it is something that should be taken seriously as the side effects can be anywhere from inconvenient to very painful.

Whether you are taking the time to sit one on one with your eye care professional or you are just doing extensive research on the internet, it is important to make sure that all of your questions and concerns are addressed and answered in a way that you fully understand everything. Most of the procedures done are completed with excellent results and no troubles at all as lasik eye surgery side effects do not happen in most patients. This means your chance for actually being the person that ends up with laser eye surgery complications is small, but it is always present.

The Most Common Problems

The most complained about problem with lasik eye surgery side effects is that of regression. Regression is where your eyes slowly go back to having bad vision, which means that after the surgery, a person could find that they still need to have glasses or contacts. While this is not painful in any way, it can be extremely irritating after everything the person went through in hopes of having better vision. It also means more money and more chances or lasik eye surgery side effects if they want to go through the procedure a second time in hopes of getting it right.

One thing that could be very painful though is that of an infection as infections can cause the healing process to slow down a good bit. It can be messy and painful but normally not vision threatening. While these are the more common of the lasik eye surgery side effects, there are many more to read about.

Some of the side effects are so small that if a person did end up with them, they may not even notice. Either way, it is important to know everything there is to know about lasik eye surgery side effects before heading in to make your appointment. Being informed is the best thing you can do for your eyes and for your overall health.

lasik eye surgery side effects do not happen in most patients as most of the operations done are completed with excellent outcomes and no troubles at all. Also, visit www.lasereyesurgery.jsgenterprises.com.

A Holistic Approach To Vision Care

Message

Improving Your Vision Naturally is a holistic approach to rebuilding your vision.

The analysis of what we see occurs in the brain. Our eyes gather information in the form of light, our brain then takes this information and analysis it, creating our very own world of vision. When we practice vision care it does not only allow us to see better, it also helps us perceive our surrounding better.

Most people will use natural vision improvement to see better. These same people become surprised when they start to improve in unrelated areas, like sports.  They will more easily understand what they are reading, perhaps play better if they are musicians.  And, they may even become less stressed and become more creative Every person will  benefit in a different way from natural vision improvement.  But, everyone will  benefit.  Now, remember, that vision improvement may not work when there are certain conditions, or certain diseases present.

Dr Bates actually was the forefather of natural vision improvement.  He developed this theory many years ago.

You can actually do this system from home.  There is a reputable Rebuilding Your Vision system available.  Depending on your own health condition, the following could be helped by this holistic approach.

Are you nearsighted?
Or, farsighted.
Are you suffering from aging vision?
Or, astigmatism?
Even tired eyes can be helped.
Does bright light bother you?
Computer eye strain (CSS)
Or how aboaut any of these: strabismus and amblyopia, glaucoma, macular degeneration.

Become pro-active with your eye care.

Here are some of the benefits of vision improvement by natural means:
Increase how clear you can see long distance,
See clearer close up,
Learn how to focus quicker,
Your eyes will become healthier, stronger and more fit,
Learn how to manage computer related strain,
Reduce your need for glasses/contacts,
Improve your depth perception,
Adapt much faster to light changes, dark or light,
And, you will have better balance,  better results in activities that use your eyes.

We exercise and look after all the other parts of our bodies.  Many health minded persons go to the gymn so they can have a healthy body.  Why not do the same with our eyes.  Let's get involved in our eye care.