black hemianopia
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hemianopia — Also known as hemianopsia. Both terms come from the Greek words hèmi (half), an (not), and opsis (seeing). They translate loosely as blindness in one half of the visual field . Phe nomenologically, various types of hemianopia can be… … Dictionary of Hallucinations
eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… … Universalium
nervous system disease — Introduction any of the diseases or disorders that affect the functioning of the human nervous system (nervous system, human). Everything that humans sense, consider, and effect and all the unlearned reflexes of the body depend on the… … Universalium
eye disease — Introduction any of the diseases or disorders that affect the human eye (eye, human). This article briefly describes the more common diseases of the eye and its associated structures, the methods used in examination and diagnosis, and the… … Universalium
Disease — Illness or sickness often characterized by typical patient problems (symptoms) and physical findings (signs). Disruption sequence: The events that occur when a fetus that is developing normally is subjected to a destructive agent such as the… … Medical dictionary
reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… … Medical dictionary
theory — A reasoned explanation of known facts or phenomena that serves as a basis of investigation by which to seek the truth. SEE ALSO: hypothesis, postulate. [G. theoria, a beholding, speculation, t., fr. theoros, a beholder] adsorption t. of narcosis… … Medical dictionary
corona phenomenon — The term corona phenomenon is indebted to the Latin noun corona, which means crown. It was introduced in or shortly before 1966 by the Danish neuroscientists Axel Klee (1933 1982?) and Rolf Willanger to denote a *visual illusion consisting of… … Dictionary of Hallucinations