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Results 1 - 2 of 2 for Achromatopsia 2
  1. ... blindness Genetic Testing Registry: Achromatopsia Genetic Testing Registry: Achromatopsia 2 Genetic Testing Registry: Achromatopsia 3 Genetic Testing Registry: ...
  2. ... shades of red, yellow, and green. Blue-yellow color vision defects (also called tritan defects), which are rarer, cause problems with differentiating shades of blue and green and cause difficulty distinguishing dark blue from black. These two forms of color vision deficiency disrupt color perception ...