How Does It Work?

A majority of your eye's focusing power (refractive power) comes from the cornea: the clear part of the eye. Very small changes in the surface of the cornea can have large effects on the eye's focusing power.

The PresbyLens® is designed to add a microscopic change in curvature to the center of the cornea of one eye to add near and intermediate focusing power.

A similar principle is used with laser refractive surgery, however this is a subtractive procedure where tissue is removed rather than an additive procedure as with the PresbyLens®

What is additive surgery?

Most laser refractive surgery that is currently performed is subtractive (LASIK / PRK), that is it removes cornea tissue to make a change in curvature. The PresbyLens® adds a very small disk of hydrogel into the front layers of the cornea to change the center of the cornea's curvature as a focus for near vision.

The PresbyLens® Surgical Procedure

The PresbyLens® is implanted in one eye as a microsurgical, outpatient procedure: The entire procedure is typically completed in under 20 minutes with use of topical (eye drop) anesthesia.

The PresbyLens® inlay is placed into the outmost layers of the cornea prepared with a femtosecond laser or microkeratome. The PresbyLens® inlay is carefully centered on the pupil by the surgeon.

Improvement in near vision may begin to be evident almost immediately, and continue to improvement over the following days and weeks. Like LASIK surgery, there should be little discomfort and a rapid return to normal activities.