Also known as deuteranomaly and anomalous trichromatic deuteranopia. All three terms are indebted to the Greek words deuteros (second), and anomalia (anomaly, irregularity). They translate roughly as 'an irregularity in the ability to perceive the second of the primary colours (i.e. green)'. The introduction of the term has been attributed to the German ophthalmologist and physiologist Willibald A. Nagel (1870-1911), the inventor of the Nagel anomaloscope (used in colour vision testing). Phenomenologically, deu-tanomaly presents in the form of a reduced sensitivity to greens. Pathophysiologically it is associated with a diminished sensitivity ofthe retina's green receptor mechanism. Deutanomaly is classified as an * anomalous trichromatism, which itself constitutes one of the * colour vision deficiencies. The term deutanomaly is used in opposition to * protanomaly and * tritanomaly.
   Hsia, Y., Graham, C.H. (1965). Color blindness. In: Vision and visual perception.Editedby Graham, C.H. New York, NY: John Wiley & Sons.
   Nagel, W.A. (1898). Beiträge zur Diagnostik, Symptomatologie und Statistik der angeborenen Farbenblindheit. Archiv für Augenheilkunde, 38, 31-66.
   McIntyre, D. (2002). Colour blindness. Causes and effects. Chester: Dalton Publishing.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • anomalous trichromatism —    Also known as anomalous trichromasy. Both terms are used to denote those types of colour vision deficiency in which one of the retinal cones malfunctions in such a way that the resulting deficiency is relative rather than absolute in nature.… …   Dictionary of Hallucinations

  • deuteranomaly —    see deutanomaly …   Dictionary of Hallucinations

  • deuteranopia —    Also known as deutan colour deficiency, deutan colour blindness, *Daltonism, and green red blindness. The term deuteranopia comes from the Greek words deuteros (second), an (not) and opsis (seeing). It translates roughly to not being able to… …   Dictionary of Hallucinations

  • tritanomaly —    The term tritanomaly comes from the Greek words treis (three) and anomalia (anomaly, irregularity). It translates roughly as an irregularity in the ability to perceive the third of the primary colours (i.e. blue). The term is used to denote a… …   Dictionary of Hallucinations