Apparatus and method for testing visual focus control

Details Apparatus and method for testing visual focus control Apparatus and method for testing visual focus control

1992-11-04

1995-09-12

Nguyen, Thong Q.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

351202, 351211, 351221, 351237, A61B 302, A61B 310

Patent

active

054501458

ABSTRACT:
An apparatus and method for testing the ability to control the focussing of an eye. A pair of images originating for apparently different distances are directed simultaneously into the eye of an observer. The observer's ability to focus selectively upon either of the images is used as an indication of tolerance to intraocular multifocal contact lenses.

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Cognitive Psychology, Third Edition, by Robert L. Solso Univ. of Nevada,-Reno pp. 123-125.

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