Topolink-LASIK or customized ablation
The Topolink LASIK procedure is based on a combination subjective refraction
and a computer-generated topographic image of the corneal surface.
The ophthalmologist determines the subjective refractive error as described
above and makes an image of the corneal surface (corneal topography).
Based on the pupil size (which is determined by adaptation of the patient's
eye to darkness), the doctor calculates the optic zone - the necessary
zone within which a full correction is achieved.
The Topolink computer calculates a customized ablation profile, a pattern
by which the laser can create a corneal surface with optimal refractive
power at any point on the cornea, regardless of the preoperative surface
condition. This method eliminates corneal irregularities at the time of
Topolink LASIK surgery and can also be used to treat postoperative corneal
irregularities resulting from standard LASIK.
This procedure is approximately 10 - 15% more exact than the standard
LASIK, because it optimizes the optical quality at every spot on the cornea.
However, this procedure demands more effort from the ophthalmologic surgeon
and relies more heavily on the equipment. Topolink requires an active
eye tracking system and a "spot scanning" laser.
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