Wettable, rigid gas permeable, substantially non-swellable conta

Details Wettable, rigid gas permeable, substantially non-swellable conta Wettable, rigid gas permeable, substantially non-swellable conta

1989-04-24

1991-12-03

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 26, 528 28, 528 29, 556414, 556421, 556437, 556438, 556442, C08G 7704

Patent

active

050701703

ABSTRACT:
Contact lenses which are optically clear, wettable, of high oxygen permeability and substantially non-swellable in the aqueous ocular envionment of use, of a block copolymer containing polysiloxane and polyoxyalkylene oxide units are disclosed, as well as the preparation thereof and methods of treating vision defects therewith.

REFERENCES:
patent: 4136250 (1979-01-01), Mueller et al.
patent: 4259467 (1981-03-01), Keogh et al.
patent: 4486577 (1984-12-01), Mueller et al.
patent: 4605712 (1986-08-01), Mueller et al.
patent: 4740533 (1988-04-01), Su et al.
patent: 4859780 (1989-08-01), Molock et al.
patent: 4921956 (1990-05-01), Molock et al.
Patent Abst. of Japan, 7, 146 (P-206) [1291], Jul. 25, 1983.

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