Intra-ocular device with multiple focusing powers/optics

摘要

An intraocular lens device (20,34) is provided that includes an intraocular lens optics providing at least two powers of magnification, one being near vision power and the other being distance vision power. The lens optics has surface modulations (22) in a diffractive zone structure (24) that are responsible for providing the near vision power. The zone structure provides an add power of over 6 diopters. The add power is indicative of an extent that the near vision focusing power is greater than the distance vision focusing power.