Eye examining apparatus

Details Eye examining apparatus Eye examining apparatus

1989-02-03

1989-12-19

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

351234, 351235, 351211, A61B 302, A61B 310

Patent

active

048878979

ABSTRACT:
An eye examining apparatus has an eye examining lens of an elastic material opposed to an eye to be examined, and control means for causing the marginal portion of the eye examining lens to protrude or sink to thereby change the lens surface of the eye examining lens.

REFERENCES:
patent: 4403840 (1983-09-01), Okun
patent: 4418990 (1983-12-01), Gerber
patent: 4697598 (1987-10-01), Bernard

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