Anti-bacterial, UV absorbable, tinted, metal-chelating polymers
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United States of America Patent
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Jun 23, 1998
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N/A
app pub date -
May 1, 1996
filing date -
May 1, 1996
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Abstract
A soft contact lens which comprises a water-swollen gel of a polymer prepared by polymerizing one or more hydrophilic monomers such as 2-hydroxyethyl methacrylate, one or more cross-linking monomers, a monomer that contains metal-chelating functionality such as an aminopolycarboxylic acid that contains a polymerizable olefinic group, and an effective amount of iron to absorb UV light and/or an effective amount of copper to cause the lens to be tinted.
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