Method of making bifocal contact lenses

Details Method of making bifocal contact lenses Method of making bifocal contact lenses

1979-03-15

1980-12-16

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

51284R, 82 11, 82 18, B29D 1100

Patent

active

042397120

ABSTRACT:
A method of making bifocal contact lenses by cutting the distant power on a lathe having an off center rotation to produce a prism lens, removing the lens from the lathe, coating the lens surface with a protective polymer and replacing the lens on a lathe and cutting the near power segment, polishing the near optical segment before removing the protective polymer and means of stabilizing the lens on the eye.

REFERENCES:
patent: 3300909 (1967-01-01), Cooper et al.
patent: 3339318 (1967-09-01), Graf et al.
patent: 3404488 (1968-10-01), Cox et al.
patent: 3430391 (1969-03-01), Borish

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