Colorblindness of the red-green type (also known as deuteranopia or deuteranomaly). The term "Daltonism" is derived from the name of the chemist and physicist, John Dalton (1766-1844). Dalton was born in a village in Cumberland, England where his father, Joseph, was a weaver in poor circumstances. He was educated by his father and John Fletcher, teacher in a Quaker school. When Fletcher retired in 1778, Dalton took his place. In 1793 he was appointed teacher of mathematics and natural philosophy at New College in Manchester. In 1803 he put forth the facts embodied in his law of partial pressures: the pressure of a mixture of gases is the sum of the pressures which would be exerted separately by the several constituents if each alone were present. Dalton's reputation largely rests upon his great Atomic Theory. It was said of Dalton that "into society he rarely went, and his only amusement was a game of bowls on Thursday afternoons." Dalton described his and his brother's affliction of colorblindness with defective perception of red and green in the first scientific paper he published. It was entitled "Extraordinary facts relating to the vision of colours, with observation" (Mem Literary Philos Soc Manchester 5: 28-45, 1798). It is the first recognized account of red-green colorblindness.
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A color vision deficiency, especially deuteranomaly or deuteranopia. [J. Dalton]

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Dal·ton·ism -ən-.iz-əm n red-green color blindness occurring as a recessive sex-linked genetic trait broadly any form of color blindness

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red-blindness: a defect in colour vision in which a person cannot distinguish between reds and greens. The term has been used to refer to colour blindness in general.
J. Dalton (1766-1844), British chemist

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dal·ton·ism (dawlґtən-iz-əm) [John Dalton] a name applied to defective perception of red and green; deuteranomaly or deuteranopia.

Medical dictionary. 2011.

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  • daltonism —    Daltonism is also known as deuteranopia, deutan colour blindness, and deutan colour deficiency. All four terms are used to denote a colour vision deficiency of the green red type. The eponym Daltonism refers to the British chemist and… …   Dictionary of Hallucinations

  • daltonism — DALTONÍSM s.n. Defect al vederii care constă în incapacitatea de a distinge culorile, în special roşul de verde. – Din fr. daltonisme. Trimis de ana zecheru, 12.03.2003. Sursa: DEX 98  daltonísm s. n. Trimis de siveco, 10.08.2004. Sursa:… …   Dicționar Român

  • Daltonism — Dal ton*ism, n. Inability to perceive or distinguish certain colors, esp. red; color blindness. It has various forms and degrees. So called from the chemist Dalton, who had this infirmity. Nichol. [1913 Webster] …   The Collaborative International Dictionary of English

  • Daltonism — [dôlt′ n iz΄əm] n. [after DALTON John, who had color blindness and investigated it scientifically] color blindness, esp. red green blindness …   English World dictionary

  • Daltonism —    John Dalton (1766 1844) was the consummate scientist. His interests embraced research, theories, and experimentation. Dalton was not permitted to attend Cambridge or Oxford because those schools were open only to members of the Church of… …   Dictionary of eponyms

  • daltonism — spalvinis aklumas statusas T sritis fizika atitikmenys: angl. color blindness; colour blindness; daltonism vok. Anerythropsie, f; Daltonismus, m; Farbenblindheit, f rus. дальтонизм, m; цветовая слепота, f pranc. achromatopsie, f; anérythropsie,… …   Fizikos terminų žodynas

  • daltonism — daltonic /dawl ton ik/, adj. /dawl tn iz euhm/, n. (sometimes cap.) Pathol. color blindness, esp. the inability to distinguish red from green. [1835 45; J. DALTON + ISM] * * * …   Universalium

  • Daltonism — noun a) Inability to perceive or distinguish certain colors, especially red green color blindness. It has various forms and degrees. b) Achromatopsia …   Wiktionary

  • DALTONISM —    , COLOUR BLINDNESS (q.v.). See DALTON, JOHN …   The Nuttall Encyclopaedia

  • daltonísm — s. n …   Romanian orthography

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