By john mce
 Laser Assisted Sub Epithelial Keratectomy (or LASEK) is a surgical laser procedure which is carried out to correct refractive error in the cornea. It is specifically designed to correct astigmatism, hyperopia (farsightedness) and myopia (nearsightedness). LASEK is a technique which combines Laser Assisted in Situ Keratomileusis (LASIK) and Photo Refractive Keratectomy (PRK), in the hope of decreasing the occurrence of flap-related complications associated with LASIK. It is particularly helpful for patients whose cornea is too thin for LASIK.
The cornea consists of layers of translucent tissue that protects the eye from light. There are five layers, from superficial to deep they are: corneal epithelium, the Bowman layer, the stroma, Descemet membrane and the endothelium.
Defects in the corneal epithelium can cause severe pain, but are quick to heal in healthy eyes. The Bowman layer, however, is not replaced after injury, and this tough layer may become standard scar tissue. The stoma makes up 90% of corneal thickness and gives the cornea its strength and shape. The Descemet membrane, like the Bowman layer, is not replaced after injury, and may turn into scar |
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By john mce
 Do you squint when reading from your computer screen? Do numbers and letters seem to fade in and out from time to time? Do you find it hard to focus? If so, you are probably experiencing deterioration of your eyesight. Eyes are often neglected by people and eyesight often deteriorates prematurely as a result. Here are a few tips to keeping your eyes healthy for longer.
Stop Smoking
Smoking can be very bad for your eyes. A recent article in Reuters Health Information states that smoking increases the risk of developing cataracts, clouding the lens and impairing vision. If you stop smoking, you have a reduced risk of developing cataracts in later life, but only some of the damage done to your eye by smoking cigarettes is reversible.
A study found that men who quit smoking had a 23% reduced risk of cataract diagnosis and a 28% reduced risk for cataract removal, compared with those who carried on smoking.
Limit Computer Time
Using computers on a daily basis is probably more strenuous on eyes than any other part of the body. The |
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