Process for producing intraocular lens

Details Process for producing intraocular lens Process for producing intraocular lens

1992-01-21

1993-09-21

Thurlow, Jeffrey

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 14, 264 22, 264246, 264255, 264 27, 264157, 264297878, 351162, 351172, 351177, B29D 1100

Patent

active

052466345

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.

REFERENCES:
patent: 3454332 (1969-07-01), Siegel
patent: 3560598 (1971-02-01), Neefe
patent: 3712718 (1973-01-01), Le Grand et al.
patent: 4460523 (1984-07-01), Neefe
patent: 4701288 (1987-10-01), Cook et al.
patent: 4710327 (1987-12-01), Neefe
patent: 4774036 (1988-09-01), LeMaster et al.
patent: 5089180 (1992-02-01), Dunks et al.

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