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Custom
Lasik
Custom
LASIK surgery uses 3-dimensional measurements of
how your eye processes images to guide the laser
in re-shaping the front part of the eye
(cornea). With this system, usually called
wavefront, some extremely precise,
individualized vision correction outcomes may be
achieved that would be impossible with
traditional LASIK surgery, contact lenses, or
eyeglasses.
You must be qualified under Food and Drug
Administration guidelines before custom LASIK
would be considered for your eye condition.
Depending on the custom laser system used and
other factors such as appropriate thickness of
your cornea, you might be considered a candidate
if you have mild to moderately high degrees of
common vision defects such as myopia, hyperopia,
and astigmatism.
Once you are considered a qualified candidate,
then your eye surgeon likely will give you the
choice of whether or not to pay extra costs
typically involved with undergoing custom rather
than traditional LASIK. Custom LASIK also might
be the best procedure for you if you have
difficult-to-correct or unusual vision defects,
or if you need enhancement from less than
optimal vision outcomes associated with past
traditional LASIK procedures.
With custom LASIK, your eye's ability to focus
light rays is measured from front to back, and a
3-D map is created that demonstrates
irregularities in the way your eye processes
images. Information contained in the map guides
the laser in customizing the treatment to
reshape your eye's corneal surface so that these
irregularities can be corrected.
Standard prescriptions for glasses, contacts, or
traditional LASIK procedures can correct
ordinary vision defects such as myopia,
hyperopia, and astigmatism. But other
irregularities associated with the eye's optical
system could not be addressed until the advent
of wavefront and related technology used in
custom LASIK.
How Custom LASIK Works
The surgeon will begin by using the wavefront
device to transmit a safe ray of light into your
eye. The light is then reflected back off the
retina, out through the pupil, and into the
device, where the reflected wave of light is
received and arranged into a unique pattern that
captures your lower- and higher-order
aberrations.
All of these visual irregularities are then
displayed as a 3-D map, referred to as a
wavefront map. This information is then
electronically transferred to the laser (in
wavefront-guided systems), and computer-matched
to the eye's position, enabling the surgeon to
customize the LASIK procedure to your unique
visual requirements.
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