Polymers for intraocular lenses
AssigneeBenz Research and Development Corporation
InventorsPatrick H. Benz, Jose A. Ors
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Abstract
The present invention provides optic portions, intraocular lenses, and polymers for use in manufacturing optic portions and intraocular lenses. The optic portions include a polymer that comprises (a) one or more alkoxyalkyl methacrylate monomers and/or one or more alkoxyalkyl acrylate monomers that are incorporated in the polymer; (b) one or more hydroxyalkyl methacrylate monomers and/or one or more hydroxyalkyl acrylate monomers that are incorporated in the polymer; and (c) optionally, one or more crosslinking agents that are incorporated in the polymer.
Claims13
A method of making an intraocular lens or intraocular lens blank comprising:
- (a) polymerizing a mixture comprising:
- (1) one or more alkoxyalkyl methacrylate monomers and/or one or more alkoxyalkyl acrylate monomers that are incorporated in the polymer;
- (2) one or more hydroxyalkyl methacrylate monomers and/or one or more hydroxyalkyl acrylate monomers that are incorporated in the polymer;
- and
- (3) one or more crosslinking agents that are incorporated in the polymer,
- (b) forming an optic portion for an intraocular lens or an intraocular lens blank from the copolymer,
- wherein:
- the total combined weight of the one or more alkoxyalkyl methacrylate monomers and the one or more alkoxyalkyl acrylate monomers ranges from 75 percent to 99 percent based on the total weight of the polymer when dry,
- the total combined weight of the one or more hydroxyalkyl methacrylate monomers and the one or more hydroxyalkyl acrylate monomers ranges from 1 percent to 25 percent based on the total weight of the polymer when dry,
- the polymerization step is performed without a solvent, and
- the polymer of the optic portion has a glass transition temperature below 35° C.
Dependencies are inferred from the claim text.