- color blindness, colour blindness, color vision deficiency, colour vision deficiency - genetic inability to distinguish differences in hue
--1 is a kind of visual impairment, visual defect, vision defect, visual disorder; birth defect, congenital anomaly, congenital defect, congenital disorder, congenital abnormality
--1 has particulars:dichromacy, dichromatism, dichromatopsia, dichromia, dichromasy; monochromacy, monochromatism, monochromatic vision, monochromia, monochromasy