LASIK and PRK are very similar
procedures.
They both utilize the excimer
laser's ability to reshape corneal tissue. While PRK is designed
to correct low to mid levels of nearsightedness and astigmatism,
LASIK also corrects high levels of nearsightedness, astigmatism,
as well as moderate levels of farsightedness. This is achieved
through the combination of the unparalleled precision and
accuracy of the excimer laser and the aid of an instrument
called a microkeratome. This combination of state of the art
technology allows us to reshape the inner cornea with accuracy
up to 0.25 microns.
The procedure takes less than 30 minutes in
its entirety, and "eye drop" is the only anesthesia
needed. The procedure begins with the microkeratome gently
folding away a thin portion of the cornea within the first 60
seconds. Then the excimer laser is applied to the inner corneal
tissue. After the excimer laser has reshaped the corneal tissue,
the thin portion of the cornea that was folded away is placed in
its original position to heal naturally with out the aid of
stitches. The natural healing abilities of the cornea will bond
the replaced portion without scarring. After the procedure most
patients are able to return to their normal activities within a
day or two. Most patients report a slight post-operative
discomfort, but this can be alleviated through medications.
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