Contact lens with PVA cover layer
First Claim
Patent Images
1. A contact lens comprising:
- a lens body formed of substantially transparent material;
an opaque simulated iris pattern applied to said lens body; and
a cover layer of polyvinyl alcohol overlying said simulated iris pattern to substantially encapsulate said simulated iris pattern between said lens body and said cover layer.
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Accused Products
Abstract
A contact lens having a cover layer of polyvinyl alcohol and an opaque simulated iris pattern and an associated method of manufacture. The opaque simulated iris pattern obscures the underlying natural iris for superior color transformation, and provides enhanced cosmetic effect.
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Citations
29 Claims
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1. A contact lens comprising:
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a lens body formed of substantially transparent material;
an opaque simulated iris pattern applied to said lens body; and
a cover layer of polyvinyl alcohol overlying said simulated iris pattern to substantially encapsulate said simulated iris pattern between said lens body and said cover layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of forming a contact lens, said method comprising:
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applying an aqueous solution of polyvinyl alcohol to a mold;
applying an opaque simulated iris pattern to the mold substantially over the polyvinyl alcohol;
casting a lens material in the mold to form a lens body; and
transferring the polyvinyl alcohol and opaque simulated iris pattern from the mold into the lens body. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A contact lens comprising:
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a lens body formed of substantially transparent material having both a concave base surface and a convex outer surface;
a cover layer of polyvinyl alcohol on at least one of said concave surface or convex surface. - View Dependent Claims (20, 21, 22, 23)
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24. A method of forming a contact lens, said method comprising:
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applying an aqueous solution of polyvinyl alcohol to a mold;
casting a lens material in the mold to form a lens body; and
transferring the polyvinyl alcohol from the mold into the lens body. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification