Method of making a rigid gas permeable bifocal contact lens

Details Method of making a rigid gas permeable bifocal contact lens Method of making a rigid gas permeable bifocal contact lens

1988-03-16

1989-08-08

Olszewski, Robert P.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51284E, 51323, 51327, 82 111, 409131, B24B 1300

Patent

active

048540897

ABSTRACT:
A bifocal contact lens is disclosed, having a posterior surface with a base curve, and an anterior surface having a distance vision curve defining a distance vision optical zone and a near vision curve defining a near vision optical zone. A first prism component is incorporated into the base curve. A second prism component is incorporated into the distance vision curve. A process for manufacturing the bifocal contact lens by lathe cutting is also disclosed.

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