protanopia


protanopia
A form of dichromatism characterized by absence of the red-sensitive pigment in cones, decreased luminosity for long wavelengths of light, and confusion in recognition of red and green. [G. protos, first, + a- priv. + ops (op-) eye]

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prot·an·opia .prōt-ə-'nō-pē-ə n a dichromatism in which the spectrum is seen in tones of yellow and blue with confusion of red and green and reduced sensitivity to monochromatic lights from the red end of the spectrum

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n.
a defect in colour vision in which affected individuals are insensitive to red light and confuse reds, yellows, and greens. Compare deuteranopia, tritanopia.

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pro·ta·no·pia (pro″tə-noґpe-ə) [prot- + an-1 + -opia] a dichromasy characterized by retention of the sensory mechanism for two hues only (blue and yellow) of the normal 4-primary quota, and lacking that for red and green and their derivatives, with loss of luminance and shift of brightness and hue curves toward the short-wave end of the spectrum, as in twilight vision. protanopic adj

Medical dictionary. 2011.

Look at other dictionaries:

  • Protanopia — Saltar a navegación, búsqueda Disfunción visual relacionada con la percepción del color. La Protanopia es la carencia de sensibilidad al color rojo. Se denomina también dicromacia roja. Consiste en la ausencia de actividad funcional de los… …   Wikipedia Español

  • protanopía — protanopia protanopia f. oftalm. Aneritropsia. Medical Dictionary. 2011. protanopía Forma de ceguera …   Diccionario médico

  • protanopia — protanopia. См. протанопия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • protanopia — [prō΄tə nō′pē ə] n. [ModL: see PROTO , AN 1, & OPIA] a defect of color vision characterized by the inability to see red …   English World dictionary

  • protanopia —    Also known as protan colour deficiency and protan colour blindness. The term protanopia comes from the Greek words protos (first), an (not), and opsis (seeing). It translates roughly as not being able to see the first of the primary colours (i …   Dictionary of Hallucinations

  • Protanopia — Disfunción visual relacionada con la percepción del color. La Protanopia es la carencia de sensibilidad al color rojo. Se denomina también dicromacia roja. Consiste en la ausencia de actividad funcional de los protoconos, que son sensibles a la… …   Enciclopedia Universal

  • protanopía — Eng. Protanopia Ver protanopsia …   Diccionario de oftalmología

  • protanopia — protanopic /proht n op ik/, adj. /proht n oh pee euh/, n. Ophthalm. a defect of vision in which the retina fails to respond to red or green. [1900 05; < NL; see PROT , AN 1, OPIA] * * * …   Universalium

  • protanopia — noun A form of color blindness. Involves a defect in distinguishing between red and green …   Wiktionary

  • protanopia — pro·ta·no·pì·a s.f. TS med. forma di daltonismo spec. nei confronti del colore rosso {{line}} {{/line}} DATA: 1958. ETIMO: der. di proto e opia con an …   Dizionario italiano