color blindness

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Related to color blindness: Color blindness test

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 ?
In our study we determine the prevalence of color blindness among candidates for different positions in a large health care institution.
There are four main strategies described here that counselor educators may use to guide the integration of CRT into their pedagogy: (a) investigating the influence of intersectionality and racism on self and curriculum, (b) examining the role and impact of color blindness in pedagogy, (c) identifying how embedded Whiteness in the curriculum benefits select populations, and (d) integrating nontraditional perspectives to ensure cultural sensitivity and inclusivity.
This study evaluated the quality of being sensitive and precise, clear in making statements of the 24 plates of Ishihara's tests for color blindness.
The prevalence of color blindness was assessed in Tibetans, Turkish men, Jordanians, Singaporean children and Nepali school children & two other populations.
What is the halakhic significance of partial color blindness regarding halakhic decisions on bloodstains?
In addition to cognitive skills, Children's Progress can be used to measure things like visual acuity, hearing and color blindness.
The patient had been examined for a trucker's driving license and failed the I-test for color blindness.
Cognitive effects and color blindness are among the documented toxic effects of organic solvent exposure in people who work in industries ranging from nail salons and dry cleaners to medical laboratories and photography labs.
Turner's vision has been debated before, but McGill's diagnosis is a specific one: The painter suffered some color blindness, affecting his reds and blues, and saw the world through cataracts.
Chalk up your color blindness, athletic coordination or receding hairline to the genetic makeup of your parents and most researchers won't give you an argument.
Because color blindness is a social inconvenience, parents and teachers should be on the lookout for kids with the disorder.
Stevenson's color blindness also paid off with the vital young Cuban dancer Carlos Acosta, who joined Houston Ballet in 1993 [see "Houston Liftoff," March 1998, page 92] and became Anderson's regular partner.