colour vision deficiency

Definitions of colour vision deficiency

1. noun

   genetic inability to distinguish differences in hue
   synonyms: color blindness, color vision deficiency, colour blindness

   types:

   dichromacy, dichromasy, dichromatism, dichromatopsia, dichromia

   a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision)

   monochromacy, monochromasy, monochromatic vision, monochromatism, monochromia

   complete color blindness; colors can be differentiated only on the basis of brightness

   red-green color blindness, red-green colour blindness, red-green dichromacy

   confusion of red and green

   yellow-blue color blindness, yellow-blue dichromacy

   confusion of yellow and blue

   type of:

   birth defect, congenital abnormality, congenital anomaly, congenital defect, congenital disorder

   a defect that is present at birth

   vision defect, visual defect, visual disorder, visual impairment

   impairment of the sense of sight