Method and apparatus for uniform background in visual field test

Details Method and apparatus for uniform background in visual field test Method and apparatus for uniform background in visual field test

1983-05-31

1985-12-17

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

351224, A61B 302

Patent

active

045589330

ABSTRACT:
A method and apparatus for providing a uniform testing field for visual field mapping includes a concave viewing screen and a plurality of selectively illuminated test points spaced thereabout. A testing device selects test points randomly and sequentially and records a subject response to map the visual field. Those test points not selected at any given time are strobed with a pulse intensity, duration, and repetition rate to render the test points equal in luminance to the surrounding background areas of the screen.

REFERENCES:
patent: 4063807 (1977-12-01), Gelius et al.
patent: 4392725 (1983-07-01), Sheingorn

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