tetartanopia — noun a form of dichromacy characterized by lowered sensitivity to yellow light; so rare that its existence has been questioned • Syn: ↑yellow blindness • Hypernyms: ↑yellow blue dichromacy, ↑yellow blue color blindness … Useful english dictionary
quadrantanopia — Loss of vision in a quarter section of the visual field of one or both eyes; if bilateral, it may be homonymous or heteronymous, binasal or bitemporal, or crossed, e.g., involving the upper quadrant in one eye and the lower quadrant in the other … Medical dictionary
color vision deficiency — any deviation from normal color vision; these conditions are popularly called by the misleading term color blindness. See monochromatic vision, dichromatic vision, protanopia, deuteranopia, tritanopia, and tetartanopia … Medical dictionary
tetartanopsia — tet·ar·ta·nop·sia (tet″ər tə nopґse ə) tetartanopia … Medical dictionary
dichromatic vision — a color vision deficiency (q.v.) in which one of the three cone pigments is missing altogether. The most common forms are protanopia and deuteranopia, each of which is transmitted by X linked inheritance and affects about 1 per cent of white… … Medical dictionary
yellow-blindness — noun a form of dichromacy characterized by lowered sensitivity to yellow light; so rare that its existence has been questioned • Syn: ↑tetartanopia • Hypernyms: ↑yellow blue dichromacy, ↑yellow blue color blindness … Useful english dictionary
yellow-blue color blindness — noun confusion of yellow and blue • Syn: ↑yellow blue dichromacy • Hypernyms: ↑dichromacy, ↑dichromatism, ↑dichromatopsia, ↑dichromia, ↑dichromasy • Hyponyms: ↑ … Useful english dictionary
yellow-blue dichromacy — noun confusion of yellow and blue • Syn: ↑yellow blue color blindness • Hypernyms: ↑dichromacy, ↑dichromatism, ↑dichromatopsia, ↑dichromia, ↑dichromasy • Hyponyms: ↑ … Useful english dictionary
