Method of and apparatus for testing visual integrity

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Folding

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351 35, 351 25, 351 17, A61B 302

Patent

active

041880978

ABSTRACT:
A method of and apparatus for determining the visual integrity of an individual is disclosed. An equal amount of visible light intensity is provided to the right and left eyes by viewing a target through a binocular viewing mechanism. The eyes of the individual are adapted to the equal intensities of light for an adaptation period and the individual then adjusts the light intensity until the perceived light intensity in each eye is equal. The difference between the light intensities provided to the right and left eyes are measured, which provides an indication of the visual integrity of the individual.

REFERENCES:
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patent: 3801188 (1974-04-01), Hunt et al.
Flynn et al., Brightness Matching in Strabismic Amblyopia.
Burian et al., Binocular Vision and Ocular Motility, 1974.
Eastman et al., Instrument with Variable Beam Splitter, for Measuring Contrast Sensitivity.
Luminance, Contrast Function and Visual Acuity in Functional Amblyopia, Lawwill et al.
Gunkel et al., Colorimetry by a New Principle, 2/78.

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