Evaluation reveals altered stereopsis and varied color discrimination effects in color-deficient observers wearing X-Chrom lenses, indicating potential drawbacks.
Four color‐deficient observers and one normal trichromatic subject were evaluated with color vision and stereoacuity tests during 1 month of X‐Chrom lens wear. For all color tests, performance of the normal subject was unaltered by X‐Chrom lens wear. Color‐deficient subjects demonstrated improved performance on the Ishihara pseudoisochromatic color plates, but either degraded performance or no change on the Farnsworth‐Munsell 100‐hue or Pick‐ford‐Nicolson red‐green anomaloscope test. Three of the five subjects exhibited degraded stereoacuity in conjunction with X‐Chrom lens wear. We conclude that the X‐Chrom lens does not improve discrimination in color‐deficient subjects and may alter stereopsis.
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Matsumoto et al. (1983) studied this question.
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