Color Blindness☆

Abstract

The scientific definition of color blindness is explained emphasizing that this denomination is not only applied to people without color experiences (monochromats) but also to people with uncommon color experiences (dichromats and anomalous trichromats). Although “color blindness” has been the classical denomination for people without normal color vision, nowadays the denomination “color vision deficiencies” (CVD) is considered more adequate. Clinical nomenclature, diagnosis and the causal origin of each color-blindness type are described. The different compensation strategies and materials available to applied psychologists for helping people with CVD are described (diagnosis, simulation tools, perceptual problems detection, creation-selection of accurate materials, etc.).