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Like LASIK surgery, with PRK there is a limit to how much tissue can safely be removed and the amount of nearsightedness that can be corrected.Many people will experience dry eye symptoms after refractive surgery and a small number may develop chronic dry eye syndrome.
For some people, their myopia may be caused by a combination of problems in the cornea, lens, and length of the eyeball.
If you have myopia, you have trouble seeing things far away, but you can see nearby things clearly.
This test uses a standardized chart or card with rows of letters that decrease in size from top to bottom.
Covering one eye, you will be asked to read out loud the smallest line of letters that you can see. If the vision test shows that you are nearsighted, your doctor will use a retinoscope to shine light into your eyes and observe the reflection off the retina to determine the amount of refractive error you have.
The most common way to treat myopia is to prescribe eyeglasses or contact lenses.
Refractive surgery, once the eyes have stopped growing, has become another option for many people.are a new option for people who are very nearsighted or whose corneas are too thin to allow the use of laser procedures such as LASIK and PRK.Phakic lenses are surgically placed inside the eye.But in a myopic eye, the eyeball is usually too long from front to back.This causes light rays to focus at a point in front of the retina, rather than directly on its surface. Myopia can also be the result of a cornea that is too curved for the length of the eyeball or a lens that is too thick.More recently, scientists have been considering the influence of circadian rhythms (sometimes referred to as our biological or body clock), which regulate systems in the body according to the daily cycles of light and dark, as a factor in the development of myopia.