Contact lens having an optimum combination of properties

Details Contact lens having an optimum combination of properties Contact lens having an optimum combination of properties

1973-06-28

1976-04-13

Levin, Stanford M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

351160, C08F21418

Patent

active

039503151

ABSTRACT:
Disclosed herein is a contact lens constructed from a copolymer of methyl methacrylate and a fluoroester having a refractive index of 1.36 to 1.45, a Knoop hardness of 5 to 16, a tensile modulus of 50,000 to 250,000, oxygen and carbon dioxide permeability of at least about 300 centibarrers and a water content of not more than about 5% by weight of the lens material.

REFERENCES:
patent: 3228741 (1966-01-01), Becker
patent: 3475521 (1969-10-01), Stroop
patent: 3503942 (1970-03-01), Seiderman
patent: 3542461 (1970-11-01), Girard et al.
patent: 3808179 (1974-04-01), Gaylord

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