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]
Inability to perceive one or more colors.
References in periodicals archive ?
Overall, When Colorblindness Isn't The Answer is perhaps the most clever, most educational collection of humanist-centered ideas I've ever read regarding race.
To address our first research question, we compared the pre- and post-test scores of all students and found statistically significant declines in overall colorblindness, t(202) = 3.
In school, colorblindness can send a message to children that everyone shares the same cultural experience.
Once again, the argument is one of colorblindness -- it's not about race, it's about the integrity of the voting process although we know that there is no fraud in the voting process.
Hence, colorblindness reinforces a phenotypic understanding of racialization--racialization runs no deeper than benign categories of difference--and so disguises the insidious effects of neoliberalism.
In the context of race, we live in a society that urges colorblindness as a racial ideal.
She turns the concept of colorblindness on its head by charging that "blindness" sits at the center of the New Jim Crow because it avoids a larger conversation about race's continuing impact on our personal and public lives.
Reactionary colorblindness justifies ignoring continued inequality and attacking affirmative action.
Pascoe's discussion of how the decision in the Loving case contributed to the emergence of colorblindness as an ideology breaks this history out of the singular celebratory interpretation many of my students and media sources want to apply to the case.
In the meantime, we have a definitive account of linkages between mixed-race marriage, patriarchy, white supremacy, and the rise of an illusory colorblindness.
But these four issues are symptoms of three larger problems-deficit thinking (Ford, 2003; Ford & Grantham, 2003; Ford, Harris, Tyson, & Frazier Trotman, 2002), colorblindness (Milner & Ford, 2007), and White privilege (McIntosh, 1989; see Figure 1).
Wrong, argues Michelle Alexander, in her potent and challenging book The New Jim Crow: Mass Incarceration in the Age of Colorblindness.