Encyclopedia of Color Science and Technology

Living Edition
| Editors: Ronnier Luo


  • Galina V. Paramei
  • David L. Bimler
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27851-8_285-1



Deuteranopia (from the Greek deuteros, second, + an, not, + opia, a visual condition) is a congenital form of severe color deficiency (dichromacy) affecting the red-green opponent color system. Deuteranopes do not distinguish between colors along a specific direction (deuteranopic confusion lines) in color space and are able to match all colors using two primaries (unlike trichromats who require three primaries). Deuteranopia is linked to the X-chromosome and arises from loss or alteration of the gene encoding the opsin of the middle-wavelength (M-) photopigment, this malstructure resulting in the absence of functioning M-cones in the retina. Deuteranopia follows a recessive pedigree pattern, with incidence of ca. 1% in the Caucasian male population. It is distinct from deuteranomaly in which some degree of...


Color Vision Color Vision Deficiency Color Categorization Chromaticity Diagram Color Vision Test 
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© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Department of PsychologyLiverpool Hope UniversityLiverpoolUK
  2. 2.School of PsychologyMassey UniversityPalmerston NorthNew Zealand