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Monocular vision is vision in which both eyes are used separately. By using the eyes in this way, as opposed by binocular vision, the field of view is increased, while depth perception is limited. The eyes of an animal with monocular vision are usually positioned on opposite sides of the animal's head, giving it the ability to see two objects at once. The word monocular comes from the Greek root, ''mono'' for one, and the Latin root, ''oculus'' for eye. ==Medical conditions related to monocular vision== Monocular vision impairment refers to having no vision in one eye with adequate vision in the other.〔http://www.guidedogsqld.com.au/cgi-bin/index.cgi/monocular/mvi 〕 Monopsia is a medical condition in humans who cannot perceive three-dimensionally even though their two eyes are medically normal, healthy, and spaced apart in a normal way. Vision that perceives three-dimensional depth requires more than parallax. In addition, the resolution of the two disparate images, though highly similar, must be simultaneous, subconscious, and complete. (After-images and "phantom" images are symptoms of incomplete visual resolution, even though the eyes themselves exhibit remarkable acuity.) A feature article in The New Yorker magazine published in early 2006 dealt with one individual in particular, who, learning to cope with her disability, eventually learned how to see three-dimensional depth in her daily life. Medical tests are available for determining monoptic conditions in humans. .〔Monocular individuals face increased challenges with driving. These specifically relate to depth perception and peripheral vision. Keeney, et al., state, "nationwide, monocularly impaired individuals have seven times more accidents than the general population with which they were compared." He recommends monocularly impaired drivers be denied class 1 licenses, (commercial driver license for transport of people), and that they be warned by their doctors regarding increased risk of accident with driving〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Monocular vision」の詳細全文を読む スポンサード リンク
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