There is a
misconception when it comes to LASIK and your retina. Some patients think that
because they are having LASIK, the issues with their retina will also be
corrected.
This is not
true.
Your retina
is found at the back of your eye. It is responsible for sending messages to
your brain. These messages tell your brain what you are looking at.
You have
LASIK to correct a refractive error. Refractive errors occur when the cornea in
your eye is misshapen. The cornea, which is found in the front of your eye,
should be round and bowl-shaped. If the cornea is not perfectly shaped, then
you will experience a refractive error: nearsightedness, farsightedness, or
astigmatism.
Light is
reflected off of objects and is filtered by the cornea of your eye. When the
cornea is perfectly shaped, this light will refract directly onto your retina.
If the cornea is misshaped, then the light will not shine directly onto your
retina, and this causes double vision, blurry vision, or fuzzy objects.
LASIK works
to reshape the cornea into a bowl-shape so that the light will reflect directly
onto your retina. It does this through the use of a laser, guided by a surgeon.
The laser only affects the cornea and not the retina; therefore it does not
correct any issues you may be experiencing with your retina.
A
board-certified surgeon should carefully analyze your eyes prior to approving
you for LASIK surgery. Most of the risks associated with LASIK occur because
the person may not be an excellent candidate for LASIK. Some of these risks
include double vision, a fixed or rotating glare, rings of light (“halos”) or
starbursts of light. There is also a risk of dry eye, however most patients
will experience dry eye for a short time after surgery.
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