FreeVis offers new generations of LASIK for improved visual outcomes and enhanced safety.
The standard LASIK treatment is based on correction values, which are 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. Standard LASIK does not take into consideration any tiny differences in the refractive power of the eye or of the cornea, differences that may occur in only one sector of the eye.
This aspect of the LASIK procedure has been improved with wavefront-guided ablation.
The traditional LASIK uses a handheld, mechanical microkeratome to cut the corneal flap.
1. 2. 3.
(1) In order to allow access to the stromal bed of the cornea, a thin flap of corneal tissue is created with a microkeratome and is turned back, (2) the stromal bed of the cornea is sculpted with the Excimer Laser, (3) the flap is repositioned and adheres tightly to the stromal bed without the need for sutures.
Rare complications in standard LASIK procedures ("button-holes", incomplete or severed flaps) were almost always traced to the preparation of the corneal flap.
Femtosecond laser technology (All-laser or Femto-LASIK) improves the precision and safety of corneal flap creation.