Process for producing intraocular lens
First Claim
1. A process of producing a one-piece intraocular lens in which the intraocular lens includes an optical portion and at least one support portion produced integrally with each other, the process comprising the steps of:
- forming a first polymerized material into a lens blank, said lens blank including a central convex portion and a flange portion at least partially surrounding and extending radially outward from said convex portion, wherein said convex portion protrudes from one of two opposite major surfaces of the flange portion;
forming a layer of monomer composition on said one of two opposite major surfaces of said flange portion, said monomer composition being polymerizable to produce a second polymerized material different from said first polymerized material, said monomer composition comprising at least one polymerizable monomer;
polymerizing said monomer composition to provide a double-layer portion defined by said flange portion and said second polymerized material formed on said one of two opposite major surfaces of said flange portion; and
forming said convex portion and said double-layer portion into said optical portion and said at least one support portion of the intraocular lens, respectively.
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0 Petitions
Accused Products
Abstract
A process of producing a one-piece intraocular lens in which the lens includes an optical portion and at least one support portion produced integrally with each other, the process including the steps of (a) forming a first polymerized material into a lens blank, the lens blank including a convex portion to provide the optical portion of the intraocular lens, and a flange portion surrounding the convex portion, (b) applying, to one of opposite surfaces of the flange portion on a side of a convex surface of the convex portion, a monomer composition which is polymerizable to produce a second polymerized material different from the first polymerized material, the monomer composition including at least one polymerizable monomer, (c) polymerizing the monomer composition on the flange portion to provide a double-layer portion defined by the flange portion and the second polymerized material produced integrally with the lens blank from the monomer composition, and (d) forming the convex portion and double-layer portion into the optical portion and at least one support portion of the intraocular lens, respectively.
38 Citations
16 Claims
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1. A process of producing a one-piece intraocular lens in which the intraocular lens includes an optical portion and at least one support portion produced integrally with each other, the process comprising the steps of:
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forming a first polymerized material into a lens blank, said lens blank including a central convex portion and a flange portion at least partially surrounding and extending radially outward from said convex portion, wherein said convex portion protrudes from one of two opposite major surfaces of the flange portion; forming a layer of monomer composition on said one of two opposite major surfaces of said flange portion, said monomer composition being polymerizable to produce a second polymerized material different from said first polymerized material, said monomer composition comprising at least one polymerizable monomer; polymerizing said monomer composition to provide a double-layer portion defined by said flange portion and said second polymerized material formed on said one of two opposite major surfaces of said flange portion; and forming said convex portion and said double-layer portion into said optical portion and said at least one support portion of the intraocular lens, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A process of producing a plurality of one-piece intraocular lenses, comprising the steps of:
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forming a first polymerized material into a lens blank, said lens blank including a plurality of convex portions, each convex portion being at least partially surround by a flange portion which extends radially outward from its respective convex portion, each convex portion protruding from one of two opposite major surfaces of each respective flange portion; forming a layer of a monomer composition on said one of two opposite major surfaces of each flange portion, said monomer composition being polymerizable to produce a second polymerized material different from said first polymerized material, said monomer composition comprising at least one polymerizable monomer; polymerizing said monomer composition to produce a double-layer portion defined by each flange portion and said second polymerized material formed on said one of two opposite major surfaces of each flange portion; and forming each convex portion and said double-layer portion into an optical portion and at least one support portion integral with said optical portion, respectively, thereby forming a plurality of intraocular lenses. - View Dependent Claims (16)
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Specification