Congenital red–green color blindness
Congenital red–green color blindness
Most common genetic condition leading to color blindness.
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Readers' pathsAug 2026 – Oct 2026
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Color blindness
Decreased ability to see color or color differences.
27%
Ishihara test
Color perception test.
16%
John Dalton
British chemist and physicist (1766–1844).
7.9%
Tetrachromacy
Type of color vision with four types of cone cells.
5.6%
Opsin
Class of light-sensitive proteins.
2.7%
OPN1LW
Protein-coding gene in humans.
2.7%
OPN1MW
Protein-coding gene in the species Homo sapiens.
2%
X chromosome
Sex chromosome present in both sexes in the XY and X0 sex-determination systems.
1.8%
Color vision
Ability to perceive differences in light frequency.
1.8%
Rose (color)
Color between red and magenta plus its shades.
1.4%
Readers come from
Share of the 3,684 readers arriving from another article
Color blindness
Decreased ability to see color or color differences.
76%
Leopold von Sacher-Masoch
Austrian author (1836–1895).
6.4%
Cone cell
Photoreceptor cells responsible for color vision made to function in bright light.
2.9%
Bob the Drag Queen
American drag queen, comedian, and musician.
1.8%
X chromosome
Sex chromosome present in both sexes in the XY and X0 sex-determination systems.
1.2%
Color
Perception caused by wavelengths of light.
0.95%
John Dalton
British chemist and physicist (1766–1844).
0.79%
Óscar de Marcos
Spanish footballer (born 1989).
0.27%