Method of making a one-piece intraocular lens

Details Method of making a one-piece intraocular lens Method of making a one-piece intraocular lens

1991-08-05

1992-12-08

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Reshaping or treatment of an optical preform

264 17, 264160, 264291, 264547, 264572, B29D 1100

Patent

active

051695693

ABSTRACT:
The PMMA (Polymethyl methacrylate) plastic used to produce one-piece intraocular lenses is modified by a novel thermoplastic pressure forming process to produce a much tougher material with improved mechanical properties. The improved material exhibits greater ductility and fatigue resistance than conventional cast PMMA sheet, resulting in a one-piece lens that is less prone to breakage from implantation or use.

REFERENCES:
patent: 3140325 (1964-07-01), Graff
patent: 4961746 (1990-10-01), Lim et al.

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