Soft gas permeable contact lens having improved clinical perform

Details Soft gas permeable contact lens having improved clinical perform Soft gas permeable contact lens having improved clinical perform

1992-06-16

1998-01-27

Lilling, Herbert J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

264 11, 264 26, 351160R, 351160H, 427 224, 427487, 427496, 427508, 427515, 522 99, 524424, 5253265, 525342, 525477, C08K 300, C08K 554, C08F13008, B29D 1100

Patent

active

057123276

ABSTRACT:
A hydrophilic soft gas permeable contact lens having substantially improved clinical performance by the provision of a sufficient higher proportion of hydroxy acrylic units to silicon units in the lens surface layer, as compared to that existing in the lens core, by the surface treatment of the lens, such as by reacting of the lens surface with polyols and base or acid or by radiation treatment of the base lens to graft, deposit or coat thereon hydroxy acrylic units.

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