Contact lens and process for preparing the same

Details Contact lens and process for preparing the same Contact lens and process for preparing the same

1982-01-05

1984-05-29

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5262382, 527313, 523106, 523108, 264 11, 264 26, 351160R, 351160H, C08F 1638, G02C 704

Patent

active

044516290

ABSTRACT:
A water-absorptive contact lens made of a copolymer comprising units of an ester of acrylic or methacrylic acid and at least one saccharide selected from D-galactose, D-glucose and D-mannose and units of at least one member selected from a hydrophilic monomer and a hydrophobic monomer, which has excellent oxygen permeability and affinity for the eye and can be worn continuously for a long period of time. The contact lens is prepared by polymerizing a monomer mixture containing an ester of acrylic or methacrylic acid with a ketalized saccharide and a hydrophilic monomer and/or a hydrophobic monomer, and after forming the resulting copolymer into a contact lens, if necessary, treating the copolymer having a shape of contact lens with an acid to convert the ketal groups into hydroxyl groups.

REFERENCES:
patent: 3103508 (1963-09-01), Fisher et al.
patent: 4042538 (1977-08-01), Lucas
patent: 4365050 (1982-12-01), Ivani

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