Method of making an intraocular lens

Details Method of making an intraocular lens Method of making an intraocular lens

1987-04-22

1988-09-27

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 27, 264 78, 264245, 264291, B29D 1100

Patent

active

047740361

ABSTRACT:
A color ringed or rimmed edge intraocular lens for implant in either the anterior chamber, the posterior chamber or the cornea of the eye. The lens has a colorless or clear central region of a material such as polymethylmethacrylate (PMMA) and a peripheral surrounding portion of a dark material such as blue PMMA. Polysulfone can also be utilized. The lens can be fabricated by passing a clear rod of optical quality PMMA through an extrusion orifice and coating the circumference of the rod with a layer of predetermined thickness of colored, preferably blue PMMA or other compatible material. Other methods of fabrication can include the introduction of a suitable dye into the outer regions of the rod, or joining the clear central region to a ring of colored material by thermal adhesive bonding or other known processes.

REFERENCES:
patent: 3454332 (1969-07-01), Siegel
patent: 3718383 (1973-02-01), Moore
patent: 4460523 (1984-07-01), Neefe
patent: 4558931 (1985-12-01), Fuhrman
patent: 4605409 (1986-08-01), Kelman
patent: 4619662 (1986-10-01), Juergens, Jr.
patent: 4629460 (1986-12-01), Dyer
Rayner and Keeler Limited, Catalogue No. 469, 2 pages.

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