Contact lens having improved dimensional stability

Details Contact lens having improved dimensional stability Contact lens having improved dimensional stability

1996-07-01

2000-01-04

Merriam, Andrew EC

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

Synthetic resins

Processes of preparing a desired or intentional composition...

526320, 264 26, 351160H, 351161, G02C 704, C08L 2902

Patent

active

060110813

ABSTRACT:
A contact lens and a contact lens blank having increased dimensional stability are constructed from a copolymer of 2,3-dihydroxypropyl methacrylate and 2-hydroxyethyl methacrylate, wherein the copolymer of 2,3-dihydroxypropyl methacrylate and 2-hydroxyethyl methacrylate has either an absolute water balance ratio greater than 8 or a relative water balance ratio greater than 2 relative to a polymer of 2-hydroxyethyl methacrylate.

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