Correcting Your Vision
with LASIK.
| The Normal
Eye  For our eyes to be able to see,
light rays must be bent or "refracted" so they can focus on the retina, the
nerve layer that lines the back of the eye. The cornea and the lens refract light rays.
The retina receives the picture formed by these light rays and sends the image to the
brain through the optic nerve. A refractive error means that the shape of your eye doesn't
refract the light properly, so that the image you see is blurred.
While refractive errors are called eye
disorders, they are not diseases. In a normal eye, the cornea and lens focus light rays on
the retina. |
Myopia
(nearsightedness)
 A myopic
eye is longer than normal, so that the light rays focus in front of the retina. Close
objects look clear but distant objects appear blurred. In myopia, distant objects are
blurry because the eye is too long, and images focus in front of the retina instead of on
it. If the cornea has an irregular curve (astigmatism), objects may also be
distorted.
|
During LASIK, special instruments
reshape the cornea. This allows the cornea to better focus light so your vision is closer
to normal. Reshaping the cornea is called refractive surgery. This is a
brief outpatient laser procedure performed under local eyedrop anesthesia and is
considered exceptionally safe. LASIK can correct for a larger range of myopia than other
refractive surgery procedures such as PRK or RK.
What is the best method
of correcting refractive errors?
There is no "best" method for
correcting refractive errors. The most appropriate correction for you depends on your eyes
and your lifestyle. You should discuss your refractive errors and your lifestyle with Dr.
Kung to decide on which correction will be most effective for you.
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