Perimeter

Details Perimeter Perimeter

1977-03-16

1979-03-20

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

351 23, A61B 302

Patent

active

041451236

ABSTRACT:
A perimeter for perimetric eye testing is provided with an electronic control mechanism for varying the brightness of the light signals in a preselected manner such that reproducibility of the examination can be achieved. An optical indicating arrangement is included to indicate the brightness values to the examiner, while the electronic control mechanism can further control an electronic recorder for recording the results of the examination.

REFERENCES:
patent: 3288546 (1966-11-01), Gans
patent: 3664732 (1972-05-01), Lynn

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