Near vision enhancing intraocular lens

Abstract

An intraocular lens assembly (100) is disclosed that increases the positive spherical aberration of an eye in order to enhance both near vision and distance vision in the eye. The intraocular lens assembly (100) comprises an intraocular lens (110) that has a convex anterior surface (210) and a concave posterior surface (220) that increase the spherical aberration of the eye. The intraocular lens (110) is constructed of a biologically compatible material. The intraocular lens (110) may be used as a replacement for the crystalline lens of the eye. The intraocular lens (110) may be placed within an anterior chamber or a posterior chamber of an aphakic eye or a phakic eye.

Description

technical field [0001] This invention relates generally to intraocular lenses, and more particularly to intraocular lenses that correct distance and near vision by enhancing the positive spherical aberration of the eye. Background technique [0002] An intraocular lens is surgically implanted into the eye to replace the refractive power lost when the eye's lens is removed. The lens of the eye must be removed because it has become damaged or diseased. After the lens has been surgically removed from the eye, an intraocular lens is surgically implanted in place of the lens. [0003] Prior art intraocular lenses typically correct distance vision, but not near vision. A variety of intraocular lenses have been designed in an attempt to match the magnitude of accommodation in incipient phakic eyes. But these attempts were unsuccessful. In general, prior art accommodating intraocular lenses prevent pseudo phakes from reading fine print because prior art accommodating intraocular...

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