color blindness

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color blindness,

visual defect resulting in the inability to distinguish colors. About 8% of men and 0.5% of women experience some difficulty in color perception. Color blindness is usually an inherited sex-linked characteristic, transmitted through, but recessive in, females. Acquired color blindness results from certain degenerative diseases of the eyes. Most of those with defective color vision are only partially color-blind to red and green, i.e., they have a limited ability to distinguish reddish and greenish shades. Those who are completely color-blind to red and green see both colors as a shade of yellow. Completely color-blind individuals can recognize only black, white, and shades of gray. Color blindness is usually not related to visual acuity; it is significant, therefore, only when persons who suffer from it seek employment in occupations where color recognition is important, such as airline pilots, railroad engineers, and others who must recognize red and green traffic signals. Tests for color blindness include identifying partially concealed figures or patterns from a mass of colored dots and matching skeins of wool or enameled chips of various colors.

Color Blindness

 

the inability to distinguish colors. Total color blindness (monochromatism), in which no color differences can be distinguished, is rare. (SeeDALTONISM for a discussion of partial color blindness.)

color blindness

[′kəl·ər ‚blīnd·nəs]
(medicine)
Inability to perceive one or more colors.
References in periodicals archive ?
The article starts by providing a contextual background to Sweden as the country with the highest rate of transnational adoptions in the world, and to the hegemonic ideology of Swedish colourblindness. It continues with an analysis of extracts from interviews with transnational adoptees.
The Huetility Colourblind Simulator software is able to accurately model different types of colourblindness allowing the user to compare a picture with simulations of how people with different types of colourblind would see the same image.
The Ishihara test is used to detect colourblindness.
He soon discovered he was a 'rotten' engineer, one afflicted by colourblindness, but he was an excellent salesman, moving up the ranks and then onto Honeywell as a senior sales executive.
Robert Webster argued that since colourblindness affects more men than women he'd been sexually discriminated against when his bosses removed him from operational duties.
His colourblindness, which caused their traditional white kits to clash with the light blue shirts and shorts of the visitors.
In a parallel way, Hubinette and Andersson explore processes of racialisation in a context where 'colourblindness' is privileged.
We are not at all arguing that race and ethnicity are unimportant in the lives of mixed families and for children from mixed racial and ethnic backgrounds (the 'colourblindness' paradigm).