New York Lasik
Lasik
LASIK
(Laser-in-situ Keratomileusis) represents a major improvement
in laser vision correction. It is also called "Flap
and Zap" by some since the surgeon lifts a thin flap
with a microkeratome and applies the energy beneath
the flap. The thin outer flap of skin varies between
130 and 180 microns (1 micron is 1/1000 of a millimeter)
and is comprised of the epithelium, Bowman's layer and
some outer stroma. The diameter of the flap can be varied
between 8.5 and 9.5 mm.
 In
contrast to PRK, these specialized layers are moved
out of the path of the laser beam and then put back
in place at the end of the procedure. This eliminates
the need for the superficial layers to regenerate after
the treatment. The thin flap is attached to the eye
by a small hinge of tissue that is left either nasally
or beneath the upper lid. The original keratomes all
produced a nasal hinge that worked well, but subsequent
refinements have resulted in "Down-Up" LASIK. Advantages
include greater comfort and a smoother surface; gravity
and the normal blink reflex tend to smooth the flap
rather than promote folds or displacement.
Click here to learn more
about the LASIK Procedure
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