Colour-space distortion in women who are heterozygous for colour deficiency

Vision Res. 2009 Mar;49(5):536-43. doi: 10.1016/j.visres.2008.12.015. Epub 2009 Jan 22.


We examined colour perception among a group of women heterozygous for colour vision deficiency. Judgements of colour dissimilarity were collected by presenting colour stimuli in groups of three for odd-one-out decisions. The judgements were summarised as one consensus colour space for the heterozygotes and another for age-matched controls. Individual differences MDS was also applied, resulting in a single colour space which can be adjusted to fit each subject's responses individually by compressing it along its axes. Heterozygous women showed a trend towards colour-space compression in a red-green dimension, or reduced salience of that dimension compared to controls, though less extreme than found in overt colour deficiency.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Case-Control Studies
  • Color Perception / genetics
  • Color Perception / physiology
  • Color Perception Tests / methods
  • Color Vision Defects / genetics*
  • Discrimination, Psychological*
  • Female
  • Heterozygote
  • Humans
  • Male
  • Optical Illusions*
  • Psychophysics / methods
  • Space Perception / physiology*