Scott U Chang

US Patent:

51587190, Oct 27, 1992

Filed:

Jan 28, 1991

Appl. No.:

7/646653

Inventors:

Scott Chang - Los Angeles CA
Thomas R. Paul - Westlake Village CA
Kenneth E. Weber - Pacific Palisades CA
Edwin A. Creasman - Fontana CA
Mei-Ing Cheng - Walnut CA
David R. Navarrete - Cerritos CA
Jimmy D. McCullough - Chino CA

Assignee:

Optical Radiation Corporation - Azusa CA

International Classification:

B29D 1100

US Classification:

264 14

Abstract:

In a method of producing an intraocular lens having a substantially clear optic and at least one filamentous haptic having high fracture toughness, solid particles are mixed into an uncured polymer, and the mixture is inserted into a mold. Ultrasonic energy is applied to the mold until the mixture solidifies. Heat is applied to complete the curing process. Ultrasonic energy is also preferably applied to the particles and uncured polymer mixture to improve dispersion of the particles therein.

US Patent:

50374354, Aug 6, 1991

Filed:

Mar 2, 1990

Appl. No.:

7/489212

Inventors:

Scott Chang - Los Angeles CA
Thomas R. Paul - Westlake Village CA
Kenneth E. Weber - Pacific Palisades CA
Edwin A. Creasman - Fontana CA
Mei-Ing Cheng - Walnut CA
David R. Navarrete - Cerritos CA
Jimmy D. McCullough - Chino CA

Assignee:

Optical Radiation Corporation - Azusa CA

International Classification:

A61F 216
B29D 1100

US Classification:

623 6

Abstract:

An intraocular lens comprises a substantially clear optic and at least one filamentous haptic having high fracture toughness. The haptic is formed of a polymer composition comprising low concentrations of solid particles uniformly dispersed throughout a polymer matrix.