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Suppression (eye)
Suppression of an eye is a subconscious adaptation by a person's brain to eliminate the symptoms of disorders of binocular vision such as strabismus, convergence insufficiency and aniseikonia. The brain can eliminate double vision by ignoring all or part of the image of one of the eyes. The area of a person's visual field that is suppressed is called the suppression scotoma (with a scotoma meaning, more generally, an area of partial alteration in the visual field). Suppression can lead to amblyopia.
== Effect ==
Nobel-prize winner David H. Hubel described suppression in simple terms as follows:
:"Suppression is familiar to anyone who has trained himself to look through a monocular microscope, sight a gun, or do any other strictly one-eye task, with the other eye open. The scene simply disappears for the suppressed eye."〔David H. Hubel: ''Eye, Brain, and Vision'', Chapter 9 "Deprivation and development", (section "Strabismus" ). Published online by Harvard Medical School (downloaded 30 September 2014)〕
Suppression is frequent in children with anisometropia or strabismus or both. For instance, children with infantile esotropia may alternate with which eye they look, each time suppressing vision in the other eye.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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