Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Patent
1995-12-22
1996-12-31
Dang, Hung
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Subjective type
351237, 351239, A61B 302
Patent
active
055898971
ABSTRACT:
A method and apparatus for testing individuals having a sub-optimal central field of vision so as to identify areas within the visual field in which images can be perceived and for determining effects of contrast sensitivity and distortion within such areas such that visual images may be presented, after being enhanced so as to modify the images in accordance with tested parameters, so that the individual will perceive the images in an improved manner.
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Gupta Amitabba
Nissanov Jonathan
Sinclair Stephen H.
Dang Hung
Sinclair Stephen H.
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