Laser Vision Correction
performing LASIK surgery use an instrument called a microkeratome to
create a thin, circular flap in the cornea. The surgeon then folds
the flap back and applies the laser to reshape the underlying corneal
tissue. The excimer laser removes tiny bits of tissue from the cornea
and reshapes it with a cool ultraviolet light beam. The flap is
then laid back in place, covering the area where the corneal tissue
is also performed using an excimer laser, a cool ultraviolet light
beam that removes tiny bits of tissue with precision from the surface
of the cornea. Rather than create a flap in the surface of the
cornea, the cornea is gently brushed to remove the very superficial
corneal cells. The laser is then applied to the underlying tissue.
Over the next week or so the superficial cells that were removed heal
back into place.
with nearsightedness, farsightedness and astigmatism can benefit from
LASIK and PRK. With nearsighted people, the goal is to flatten a
cornea that is too steep. The opposite is desired for
farsighted people--a steeper cornea will provide clearer vision.
Excimer lasers can correct astigmatism as well, because it can smooth
an irregular cornea into a more regular shape.
office uses the VISX STAR S4 ActiveTrak™ Excimer Laser System as
well as Wavefront CustomVue. Using ActiveTrak and Wavefront
CustomVue technology allows the doctor to center the laser
beam most accurately, providing the ability to create the most
accurate and precise treatment for each eye.
VISX ActiveTrak eye-tracking system was developed exclusively for
ophthalmic use, and specifically for eye tracking during laser vision
correction (LASIK or PRK). The older, first generation LADARVision®
tracking was originally developed for military applications, not
ophthalmology. It was later adapted for ophthalmology.
uses the only 3-D eye-tracking system. That means that ActiveTrak
follows not only the left and right movements of the eye, it also
follows the up and down movements that can happen when you breathe.
STAR™ laser systems, which combine flexibility through variable
beam and scanning technology, produce smoother treatments.
Additionally, variable beam technology removes less tissue, which
results in a faster, safer treatment than flying spot lasers.