Non-irritating soft gas permeable contact lens and process for p

Details Non-irritating soft gas permeable contact lens and process for p Non-irritating soft gas permeable contact lens and process for p

1992-06-16

1993-11-02

Lilling, Herbert J.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528489, 528491, 528492, 528493, 528495, 528496, 523103, 523106, 5253273, 525937, 526279, C08F 610, C08F 3008, C08J 300

Patent

active

052584909

ABSTRACT:
A clinically-acceptable hydrophilic silicone-based soft gas permeable contact lens produced by subjecting the lens material to extraction with a hydrophilic, polar group-containing, organic solvent followed by replacement of the organic solvent with a physiological saline solution.

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patent: 4977229 (1990-12-01), Culberson et al.
patent: 5002979 (1991-03-01), Stoyan
patent: 5023305 (1991-06-01), Onozuka et al.

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