Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1996-12-11
1999-07-13
Sugarman, Scott J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351160H, 523106, G02C 704, C08K 300
Patent
active
059233974
ABSTRACT:
A bimodulus contact lens article, including both contact lenses and buttons from which contact lenses are produced. More specifically, the subject bimodulus contact lens article comprises a rigid gas-permeable polymeric core section and a soft edge section attached annularly about the core section. The edge section of the subject lens article comprises a crosslinked composition polymerized from a monomer mix including at least 15 weight percent of monomers represented by Formula I: ##STR1## wherein R.sub.1 is selected from: hydrogen and a methyl group, and R.sub.2 is selected from alkyl groups having from 1 to 8 carbon atoms, so long as R.sub.1 and R.sub.2 are not both methyl groups. The soft edge section is annularly attached to the core section by an interpenetrating network of the crosslinked composition into the core section.
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Bausch & Lomb Incorporated
Konkol Chris P.
Sugarman Scott J.
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