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  • Title: Effect of X-Chrom lens wear on chromatic discrimination and stereopsis in color-deficient observers.
    Author: Matsumoto ER, Johnson CA, Post RB.
    Journal: Am J Optom Physiol Opt; 1983 Apr; 60(4):297-302. PubMed ID: 6602553.
    Abstract:
    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 Pickford-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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