Abstract
RED anomalous colour vision is the rarest type of sex-linked red-green colour vision defect1,2, and I have found it only twelve times among 173 men and twice among 23 women who were red-green major defectives. It takes two forms, one with, and the other without, the darkened red of the protanope. These are found in about equal proportions.
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PICKFORD, R. Red Anomaly Dominant to Protanopia. Nature 165, 980–981 (1950). https://doi.org/10.1038/165980c0
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DOI: https://doi.org/10.1038/165980c0
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