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US 5,346,978 AGranted
Polymeric compositions useful in oxygen permeable contact lenses
AssigneePolymer Technology Corporation
InventorsRichard C. Baron, Scott D. Rothenberger
Life of this patent
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Abstract
Carboxylic acid esters devoid of beta hydrogens are homopolymerized or copolymerized with contact lens organic materials to form desirable contact lens materials and contact lenses. These materials have good contact lens properties, including desirable DK values, hardness, machineability and a desirable refractive index of at least 1.
Claims16
A contact lens material which is the polymerization product of a mixture comprising neopentyl methacrylate.
A contact lens which is formed from the polymerization product of a mixture comprising neopentyl methacrylate.
Dependencies are inferred from the claim text.