| Wavefront
or aberrometer-guided LASIK represents a new development of the "normal"
LASIK and is intended to provide for even better vision, especially
at dawn and dusk.
Up until now, the LASIK
laser treatment has been performed based on correction values, which
were determined for the optimal correction with eyeglasses or contact
lenses. This value is indicated in diopter, for example –3 diopter.
During LASIK treatment, the cornea is ablated evenly in order to obtain
a correction of –3 diopter everywhere. The sometimes tiny differences
in the refractive power of the eye or of the cornea, which may only
occur in one sector, are not taken into consideration with this method.
A so-called aberrometer such as the Zywave aberrometer manufactured
by Bausch & Lomb, Heidelberg/Munich provides novel measuring standards.
The aberrometer determines a value, such as –3 diopter as mentioned
above, and it measures the refractive power of the eye at more than
fifty different spots and produces a “map of the eye”, which
contains the precise refractive power for every measured spot on the
eye. In other words: rather than picking a size ten suit from a rack,
you will receive a custom-made suit.
Thus, theoretically, measuring the refractive error with an aberrometer
is more precise. It is not certain whether this theoretical advantage
can also be confirmed clinically. The Zywave aberrometer has first been
introduced on March 23rd, 2000 at the “Videorefractiva 2000”
meeting of laser surgeons.
The FreeVis Centers offer aberrometer technology for Wavefront-guided
LASIK. Contact us!
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about the LASIK procedure
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about the wavefront / aberrometer-guided LASIK
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