Production of cosmetic lenses

Details Production of cosmetic lenses Production of cosmetic lenses

1988-09-19

1989-09-12

Arnold, Bruce Y.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

8507, B29D 1100, G02C 704

Patent

active

048654396

ABSTRACT:
The invention is a method of making a cosmetic contact lens that changes the apparent color of the eye. This is accomplished by the following steps. The convex lens surface is expanded and distorted by a swelling agent. The swelling agent increases the pore size allowing the precipitating solution to move deeper into the convex lens surface. The precipitating solution is reacted to form an insoluble light reflecting iris pattern layer. The iris area of the convex lens surface is dyed the desired transparent color. When the lens is placed on the eye, the opaque light reflecting layer is viewed through the transparent dyed surface layer changing the apparent color of the eye.

REFERENCES:
patent: 3476499 (1969-11-01), Wichterle
patent: 3557261 (1971-01-01), Wichterle
patent: 4460523 (1984-07-01), Neefe

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