Automatic optometer

Details Automatic optometer Automatic optometer

1985-06-04

1987-10-06

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

351237, A61B 302

Patent

active

046978950

ABSTRACT:
An automatic optometer provided with a first visual target for measuring the visual power of a subject, a response input unit for the subject to input a response corresponding to the visual target, a control unit for determining the accuracy of the subject's response input and for presenting additional different visual targets, a counter, the counter being reset each time a visual target is presented, a comparison unit for comparing the output of the counter with a predetermined value, and request means for requesting the subject's response input in accordance with the output of the comparison unit.

REFERENCES:
patent: 3861790 (1975-01-01), Tamura
patent: 3969020 (1976-07-01), Lynn
patent: 4105302 (1978-08-01), Tate

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