Method of forming iris variegation patterns on contact lenses

Details Method of forming iris variegation patterns on contact lenses Method of forming iris variegation patterns on contact lenses

1986-03-27

1988-01-19

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Process of printing permanently on substrate, other than...

Resist or reserve

8446, 8465, 8507, 8650, D06P 512, D06P 500

Patent

active

047196572

ABSTRACT:
A tinted soft contact lens such as a hydrated hydrogel lens having a variegated iris pattern is prepared by forming an iris pattern on the lens with a viscous paste which can contain an unoxidized vat dye. The lens is treated with a developer solution to obtain a tinted lens having an iris pattern which can be clear or different in color or in hue from the surrounding iris area.

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patent: 4303701 (1981-12-01), Torgersen et al.
patent: 4447474 (1984-05-01), Neefe
patent: 4457761 (1984-07-01), Sliger
patent: 4494954 (1985-01-01), Suminde
patent: 4518390 (1985-05-01), Rabenau et al.
patent: 4634449 (1987-01-01), Jenkins

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