Colored contact lenses
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United States of America Patent
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Jun 20, 2017
Grant Date -
Mar 9, 2017
app pub date -
Dec 28, 2015
filing date -
Sep 3, 2015
priority date (Note) -
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Abstract
The disclosure is related to colored contact lenses including a transparent protective layer, a colored layer and a lens layer, wherein the colored layer is between the transparent protective layer and the lens layer. A composition for forming the transparent protective layer includes at least one first hydrophilic monomer and a first thickener. A composition for forming the colored layer includes at least one second hydrophilic monomer, an adhesive resin, a second thickener and a colorant. At least one of the thickeners used for forming the transparent protective layer and the color layer is a modified polyvinylpyrrolidone.
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