Refractively corrected, wavelength selective, transparent occluder for a non-tested eye for visual field testing
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United States of America Patent
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Sep 8, 1998
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app pub date -
Oct 24, 1996
filing date -
Oct 24, 1996
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Abstract
An embodiment of the present invention is a refractively corrected, wavelength selective, transparent visual field test occluder for a non-tested eye used in a visual field testing apparatus which uses a stimulus that produces light in a first color spectral range and a background illumination that produces light in a second color spectral range, the visual field test occluder comprising: (a) a base; (b) a fastener configured to fasten the base over a subject's eye; (c) a mounting affixed to the base configured to hold a filter and a refractive lens; and (d) a filter held in the mounting; wherein the filter substantially prevents transmission of light in the first color spectral range and substantially transmits light in the second color spectral range.
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