Refractive Multifocal IOLs

The refractive multifocal IOL (ReZOOM) makes use of an optic design containing five refractive zones, some of which focus light from near objects, some from intermediate objects and some from distance objects.

The central portion (Zone 1) of the refractive multifocal IOL is distance dominant to provide distance vision under bright light conditions, such as daytime driving. Zone 2, moving outward, is near dominant to provide good near vision under a variety of lighting conditions. Zone 3 is for distance under moderate lighting conditions. Zone 4 adds more near vision support for dim lighting conditions when the pupil is large. Zone 5 adds more distance vision support under dim lighting conditions. The entire lens has an "aspheric" shape which means it provides intermediate vision across all zones.