vision

vision
The act of seeing. SEE ALSO: sight. [L. visio, fr. video, pp. visus, to see]
- binocular v. v. with a single image, by both eyes simultaneously.
- blue v. SYN: cyanopsia.
- central v. v. stimulated by an object imaged on the fovea centralis. SYN: direct v..
- colored v. (VC) SYN: chromatopsia.
- cone v. SYN: photopic v..
- direct v. SYN: central v..
- double v. SYN: diplopia.
- facial v. sensing the proximity of objects by the nerves of the face, presumed in the case of the blind and also in sighted persons who are blindfolded or in darkness.
- green v. SYN: chloropsia.
- halo v. a condition in which colored or luminous rings are seen around lights.
- haploscopic v. stereoscopic v. produced by the haploscope, or mirror-type stereoscope.
- indirect v. SYN: peripheral v..
- multiple v. SYN: polyopia.
- night v. SYN: scotopic v..
- oscillating v. SYN: oscillopsia.
- peripheral v. v. resulting from retinal stimulation beyond the macula. SYN: indirect v..
- photopic v. v. when the eye is light-adapted. See light adaptation, light-adapted eye. SYN: cone v., photopia.
- red v. SYN: erythropsia.
- rod v. SYN: scotopic v..
- scotopic v. v. when the eye is dark-adapted. SEE ALSO: dark adaptation, dark-adapted eye. SYN: night v., rod v., scotopia, twilight v..
- stereoscopic v. the single perception of a slightly different image from each eye. SYN: stereopsis.
- subjective v. visual impressions that arise centrally and do not originate with ocular stimuli.
- tinted v. SYN: chromatopsia.
- triple v. SYN: triplopia.
- tubular v. a constriction of the visual field, as though one were looking through a hollow cylinder or tube. SYN: tunnel v..
- tunnel v. SYN: tubular v..
- twilight v. SYN: scotopic v..
- yellow v. SYN: xanthopsia.

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vi·sion 'vizh-ən n
1) the act or power of seeing: sight
2) the special sense by which the qualities of an object (as color, luminosity, shape, and size) constituting its appearance are perceived through a process in which light rays entering the eye are transformed by the retina into electrical signals that are transmitted to the brain via the optic nerve

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vi·sion (vizhґən) [L. visio, from vidēre to see] 1. the special sense by which objects in the external environment are perceived by means of light they give off or reflect, which stimulates the photoreceptors in the retina; called also sight. 2. the act of seeing. 3. an apparition; a subjective sensation of vision not elicited by actual visual stimuli. 4. visual acuity.

Medical dictionary. 2011.

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  • Vision — Vision …   Deutsch Wörterbuch

  • VISION — «Toute la conduite de notre vie dépend de nos sens, entre lesquels celui de la vue étant le plus universel et le plus noble. Il n’y a point de doute que les inventions qui servent à augmenter sa puissance ne soient des plus utiles qui puissent… …   Encyclopédie Universelle

  • Vision — most often refers to visual perception, but may refer to vision (spirituality) (i.e., inspirational experiences or perceptions believed to come from a deity or other supernatural source) or hallucinations.In business, a vision refers to the… …   Wikipedia

  • Vision — Vi sion, n. [OE. visioun, F. vision, fr. L. visio, from videre, visum, to see: akin to Gr. ? to see, ? I know, and E. wit. See {Wit}, v., and cf. {Advice}, {Clairvoyant}, {Envy}, {Evident}, {Provide}, {Revise}, {Survey}, {View}, {Visage}, {Visit} …   The Collaborative International Dictionary of English

  • Vision On — fue un programa de televisión inglés producido y transmitido por la BBC1 desde 1964 hasta 1977. Estuvo enfocado a los niños con sordera y problemas visuales. Concebido por Ursula Eason y Patrick Dowling, puso énfasis en la comunicación e… …   Wikipedia Español

  • Vision On — was a British children s television programme, shown on BBC1 from 1964 to 1977 specifically for deaf children. It was conceived by BBC Producers Ursula Eason and developed by Patrick Dowling to replace a monthly series For The Deaf , a programme… …   Wikipedia

  • Vision — (lat. visio, „Anblick, Erscheinung“) steht für: Vision (Religion), eine religiöse Erscheinung Vision (Thomas Mann), ein Text von Thomas Mann den Spielfilm Vision – Aus dem Leben der Hildegard von Bingen (2009) im weiteren Sinn für eine… …   Deutsch Wikipedia

  • vision — Vision. s. f. v. Action de la faculté de voir. De quelle maniere, & en quelle partie de l oeil se fait la vision. La vision beatifique, en termes de Theologie, C est l action par laquelle les bien heureux voyent Dieu. Il sign. aussi, Les choses… …   Dictionnaire de l'Académie française

  • Vision 20/20 — (20/20 Vision) est le quatre vingt treizième épisode de la série télévisée La Cinquième Dimension, diffusé le 10 décembre 1988 aux États Unis. Synopsis Après avoir cassé ses lunettes, un homme arrive à voir l avenir. Il décide de se… …   Wikipédia en Français

  • vision — UK US /ˈvɪʒən/ noun ► [C or U] the ability to imagine how something could develop in the future, or the ideas that come from imagining in this way: »There s a lack of leadership, a lack of vision, and a lack of organization in the industry as a… …   Financial and business terms

  • visión — f. fisiol. Capacidad que permite recibir e interpretar las ondas lumínicas comprendidas entre los 400 y 800 nanómetros. Los principales órganos que intervienen en el proceso son el ojo, el nervio óptico y el cerebro. En el hombre, la visión es… …   Diccionario médico

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