MULTIFOCAL CORNEAL CONTACT LENS PAIR

摘要

A pair of multifocal contact lenses (200) customized for a patient. A first corneal contact lens and a second corneal contact lens each have an anterior side with a power curve defined in part by (i) a central surface (202), (ii) an inner annular surface (204) contiguous with the central surface (202), (iii) a second annular surface (206) contiguous along a radially inner periphery (208) with inner annular surface (204), and optionally (iv) an outer annular surface (210) contiguous along a radially inner periphery (212) with the second annular surface (206). Each of the annular surfaces (204 and 210) is concentric or coaxial with central surface (202). The central surface (202) corresponds to a distant vision correction zone, while inner annular surface (204) corresponds to an intermediate vision correction zone, second annular surface (206) corresponds to a near distance correction zone and outer annular surface (210) corresponds to another distant vision correction zone.