Hydratable gas permeable methyl methacrylate copolymer

Details Hydratable gas permeable methyl methacrylate copolymer Hydratable gas permeable methyl methacrylate copolymer

1977-10-05

1979-08-07

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

3 13, 260 296TA, 526304, C08F 2006, G02C 704

Patent

active

041636082

ABSTRACT:
A gas permeable contact lens material made by copolymerizing methyl methacrylate, N-(1,1-dimethyl-3-oxobutyl) acrylamide and methacrylic acid to form a hard solid contact lens material which may be made soft and hydrophilic by placing the lens in an alkaline solution.

REFERENCES:
patent: 3728317 (1973-04-01), Blank
patent: 3803093 (1974-04-01), Neefe
patent: 3984485 (1976-10-01), Neefe

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