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VISX 3D
ActiveTrak
The ActiveTrak
three-dimensional eye tracker is
causing the most excitement
among the medical community and
patients. The ActiveTrak with
its dual aide mounted infrared
cameras continuously positions
the laser beam precisely on the
eye throughout the procedure.
Without a
tracking device, laser
eye correction would
require you to hold your
eyes as still as
possible during laser
eye surgery. However,
even a "still" eye makes
minute, involuntary
movements - including
moving slightly with
each breath.
Now, VISX 3D ActiveTrak
follows the tiny motions
of your eye
instantaneously and
automatically, in all
three dimensions,
repositioning the laser
to ensure accuracy.
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There is
no need to concentrate
and try to hold your eye
still as you must in
other, non-tracking
lasers. You don't need
to worry about seeing
the fixation light and
keeping your eyes
focused on it.
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ActiveTrak follows the tiny
motions of your eye
instantaneously and
automatically adjusts the laser
beam. And, it is the only eye
tracking laser to track your eye
in all three dimensions - up,
down, and vertical. Eye position
and speed are checked at least
six times before every pulse as
compared to only 1.7 times per
pulse with radar tracking
lasers. The three-dimensional
capability that tracks the x, y
and z axis means that ActiveTrak
follows not only the left and
right movements of the eye; it
follows the up and down
movements that can happen when
one breathes.
This is the only laser system
that can capture all three
dimensions of intra-operative
eye movements without the
requirement of pupillary
dilation. There is no need to
worry if your eye wanders. The
ActiveTrak just slows down and
waits for your eye to
"straighten up" again before
going on with the treatment.
The
Importance of Tracking
In order to get a
precise treatment, the laser
beam must be centered on the
eye. Your results depend on it.
If the eye goes too far away
from the center, it is important
for the laser to stop or slow
down until the eye is properly
aligned again. The VISX StarS4
laser does this for you, unlike
others that can't be stopped no
matter how far off center the
eye becomes.
Being too far off center can
cause elliptical treatments that
do not give ideal vision. The
ActiveTrak prevents this from
happening, so you can truly
relax, knowing that you're
obtaining a vision correction
that's precisely centered on
your eye. |
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