RESTOR

The ReStor lens has an overall design very similar to other single-focus lenses. The difference is that the center section of the front optical surface has concentric rings of differing focus. Sharp distance vision is afforded by the more peripheral portion of the lens (like the upper part of a bifocal lens in a pair of glasses), while sharp near vision is provided by focal properties of the more central portion of the lens (like the reading portion of a bifocal lens).

The multiple concentric rings of different focus (detail shown below) in this lens effect a much broader range of focus than a single-focus lens implant, through both refractive and diffractive optics. This lens received FDA approval in April '05, after review of 3-year safety and efficacy data in clinical studies.

The ReStor lens has undergone incremental design evolution in the four years since its FDA approval and widespread use in the US. It now incorporates aspheric optics for optimized distance viewing, and night driving clarity; and has a maximum "add" (reading range correction) that is better suited to reading tasks most people do commonly.

Patients implanted with the ReStor lens have experienced the lifestyle benefits that come with improved vision at all distances, and greater freedom from reading glasses and bifocals. According to the clinical studies, three out of four patients implanted in both eyes with the ReStor lens reported never wearing glasses following cataract surgery. Additionally, the clinical studies indicate that over 95% of the study subjects were so satisfied with their new quality vision that they would have the ReStor lens implanted again.