Intraocular lens with resilient haptics

Details Intraocular lens with resilient haptics Intraocular lens with resilient haptics

1992-09-29

1994-02-01

Isabella, David

Prosthesis (i.e., artificial body members), parts thereof, or ai

Eye prosthesis

Intraocular lens

A61F 216

Patent

active

052828530

ABSTRACT:
An improved intraocular lens is disclosed with at least one filamentary haptic composed of a continuous matrix material interspersed with a toughening amount of discrete particles of a multistage, sequentially produced elastomeric polymer. An improved process for preparing a single-piece intraocular lens is also disclosed. The process involves preparing a composite lens blank by molding pellets composed of a continuous polymeric material interspersed with particles of a multistage, sequentially produced elastomeric polymer about a central optic lens core so as to produce a single lens blank having a toughened annular region surrounding the central optic region, and then machining at least one filamentary haptic from the toughened annular region to prepare the lens.

REFERENCES:
patent: 4588406 (1986-05-01), Fedorov et al.
patent: 4676791 (1987-06-01), Le Master et al.
patent: 4743255 (1988-05-01), Bardenstein
patent: 4774036 (1988-09-01), Le Master et al.
patent: 4813956 (1989-03-01), Gupta
patent: 5037435 (1991-08-01), Chang et al.
patent: 5089180 (1992-02-01), Dunks et al.

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