Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Reexamination Certificate
2006-10-31
2006-10-31
Imam, Ali (Department: 3735)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Subjective type
C351S246000
Reexamination Certificate
active
07128418
ABSTRACT:
A method for testing a plurality of regions in a color space to identify any of, or a subcombination of, the following color vision deficiencies: protanopia, deuteranopia, tritanopia, and related anomalies. A set of distractor colors is distributed across a region of color space such that the confusion line through a single target color intersects approximately the middle of the set. The distractor set spans a region extending in both chromaticity and luminance, which provides leeway for display errors since the confusion line will intersect the set even if colors do not render exactly as specified, and color deficient observers would still not be able to identify the target. A web-based implementation enables remote testing of subjects.
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Gauthier & Connors LLP
Imam Ali
Massachusetts Institute of Technology
Sanders John R.
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