A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/16 (2006.01) B29C 43/02 (2006.01) B29D 11/02 (2006.01)
Patent
CA 2128938
The polymethyl methacrylate (PMMA) or copolymer thereof used to produce one-piece intraocuiar lenses is modified by a compression molding process to produce a much tougher material with improved mechanical properties. The process takes material in rod form and compresses into lens blanks. The molded lens blanks receive little or no compression strain in the center 4 man optic zone. The compression is limited to the periphery region outside the center 4 mm zone. The intraocular lens fabricated from the molded lens blank exhibits greatly increased haptic mechanical properties and resistance to breakage.
Chang Shiao H.
Gordy Walker L.
Rice Paul D.
Sherwood Charles H.
Tunberg Bruce A.
Iolab Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
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