| 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. Synonym: quadrantic hemianopia. (05 Mar 2000) |
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| quadrantanopia |
hemianopia in one fourth of the visual field, bounded by a vertical and a horizontal radius. Called also tetartanopia and quadrant hemianopia.
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| quadrantanopia | blindness in one fourth of the visual field |
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