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 We
are proud to be able to offer our patients the latest
and very best technology today for Laser Vision Correction.
We use the new VISX Star S4 Active
Trak laser and Allegretto. We will use the laser
which will best accommodate your visual needs. Both lasers
are tracking lasers, giving you even more confidence
about the expected outcome of your laser
vision correction procedure.
Info on VISX Star S4 Active Trak Laser:
With ActiveTrak, the laser detects and compensates for eye movements by guiding the laser beam to keep it centered over the treatment area. The active eye tracking system works without pupil dilation and incorporates a unique 3-D tracker which delivers improved laser vision precision.
Info on ALLEGRETTO Wavelight Laser:
In addition to the Visx Star S4, we are happy to offer
our patients the Allegretto Wavelight Laser. This laser
received FDA approval in October 2003. It was approved
for a broad range of treatment for nearsightedness, farsightedness,
and astigmatism.
As an advanced laser for refractive surgery, the Allegretto
Wavelight was designed specifically to perform wavefront-optimized
ablation profiles. Having a repetition rate of 200 pulses
per second, it is the fastest laser available in the
United States today. This laser is able to perform three
to four times as fast as the Alcon Autonomous 4000 flying
spot laser, which has a similar spot size and can treat
one diopter of prescription every 4 seconds. The rapid
speed of treatment means there is less dehydration of
the corneal bed and improved refractive predictability
due to few hydration changes. Treatment time is usually
less than 15 seconds.
With a response time of less than 8 milliseconds, the
laser's sophisticated eye tracker neutralizes any voluntary
or involuntary movements the eye may make, assuring a
higher quality of treatment.
Allegretto Wavelight technology features a unique approach
to corneal sculpting. The normal curvature of a healthy
cornea is prolate or higher in the center. Most lasers
flatten the cornea centrally to create an oblate cornea.
This oblate shape causes spherical aberration which degrades
the quality of vision, especially at night.
In addition to treating the cornea centrally, the Allegretto
laser also treats the cornea peripherally. The laser
performs a prolate ablation based on the anterior curvature
readings. This prolate curvature in part, accounts for
the excellent quality of vision during the day and night.
Larger treatment zones of up to 8mm are possible with
the Allegretto which means patients who were previously
not candidates for Lasik may now qualify for the procedure.
The laser's custom capabilities help to minimize haloes,
glare and other possible night vision problems therefore
producing better quality of vision in patients.
 LASIK (Laser-In-situ Keratomileusis)
LASIK corrects vision by reshaping the cornea so that light rays focus more precisely on the retina, thereby reducing or eliminating refractive errors. A thin protective flap of corneal tissue is first folded back, using a special instrument known as a microkeratome. The excimer laser uses a cool light beam to remove a predetermined amount of tissue from the inner cornea to correct the individual's refractive error. The corneal flap is then placed back in it's original position where it immediately starts to bond back to the cornea. The LASIK procedure is done for nearsightedness, farsightedness and astigmatism.
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