INTRAOCULAR LENSES

摘要

A refractive intraocular (26) lens including an optic portion (28) having an outer peripheral edge (30) and two or more but preferably two, three or four balanced haptic elements (32). Each haptic element (32) is of like form to achieve a "propeller-like" appearance. Each haptic element (32) is also manufactured to have an inner portion (34) and an outer tip (36) for supporting the optic portion (28) in a patient's eye. The inner portion (34) of each haptic element (32) is permanently connected to the outer peripheral edge of the optic portion. Each haptic element (32) also includes a contact plate (38) and a central portion (44) located between the contact plate (38) and the inner portion (34). Each haptic (32) is formed to have greater resistance to bending in a plane generally parallel to an eye's optical axis than in a plane (48.48) generally perpendicular to the eye's optical axis. T he intraocular lens (26) is so designed to exhibit less than approximately 1.0 mm axial displacement of the optic portion along the eye's optical axis under a compression force suitable to effect a 1.0 mm in diameter compression of the intraocular lens (26).