Blindness, especially that occurring without apparent change in the eye itself, as from a brain lesion. [G. amauros, dark, obscure, + -osis, condition]
- a. congenita of Leber [MIM*204000 & MIM*204100] a disorder of cone-rod abiotrophy causing blindness or severely reduced vision at birth; autosomal recessive inheritance with at least 3 different loci. Type I is caused by mutation in the gene for retinal guanylate cyclase (GUC2D) on chromosome 17p, type II by mutation in the gene for retinal pigment epithelium-specific 65-kD protein (RPE65) on 1p, and type III by mutation in the gene for photoreceptor-specific homeobox gene CRX on 19q.
- a. fugax a transient blindness that may result from a transient ischemia due to carotid artery insufficiency, retinal artery embolus, or to centrifugal force (visual blackout in flight).
- pressure a. loss of vision occurring a few seconds after intraocular pressure exceeds systolic pressure of retinal arteries.
- toxic a. blindness due to optic neuritis caused by methyl alcohol, lead, arsenic, quinine, or other poisons.

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am·au·ro·sis .am-ȯ-'rō-səs n, pl -ro·ses -.sēz partial or complete loss of sight occurring esp. without an externally perceptible change in the eye
am·au·rot·ic -'rät-ik adj

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partial or complete blindness. For example, amaurosis fugax is a condition in which loss of vision is transient. See also Leber's congenital amaurosis.
amaurotic adj.

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am·au·ro·sis (am″aw-roґsis) [L., from Gr. amaurōsis darkening] 1. blindness. 2. in a more limited sense, loss of vision in which there is no apparent lesion of the eye, such as from disease of the optic nerve, spine, or brain. Cf. amblyopia. amaurotic adj

Medical dictionary. 2011.

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  • Amaurosis — (Greek meaning darkening, dark, or obscure) is vision loss or weakness that occurs without an apparent lesion affecting the eye.[1] It may result from either a medical condition or from excess acceleration, as in flight. The term is the same as… …   Wikipedia

  • amaurosis — f. oftalm. Ceguera sin que existan lesiones aparentes en el ojo; a menudo se produce por enfermedad del nervio óptico, el cerebro, etc. Medical Dictionary. 2011. amaurosis …   Diccionario médico

  • amaurosis — [am΄ô rō′sis] n. [ModL < Gr amaurōsis < amauros, dark] partial or total blindness amaurotic [am΄ôrät′ik] adj …   English World dictionary

  • Amaurosis — Am au*ro sis, n. [Gr. ?, fr. ? dark, dim.] (Med.) A loss or decay of sight, from loss of power in the optic nerve, without any perceptible external change in the eye; called also {gutta serena}, the {drop serene} of Milton. [1913 Webster] …   The Collaborative International Dictionary of English

  • amaurosis — amaurosis. См. амавротическая идиотия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Amaurōsis — (griech., »Verdunkelung«), die vollkommene Erblindung eines Auges, so daß nicht einmal mehr der Unterschied zwischen hell und dunkel wahrgenommen wird …   Meyers Großes Konversations-Lexikon

  • Amaurosis — Amaurosis, der schwarze Staar, entweder von der Zerstörung des Sehnerven oder von einer Lähmung desselben herrührend, in letzterm Falle ist Heilung möglich aber selten …   Herders Conversations-Lexikon

  • amaurosis — (Del gr. ἀμαύρωσις, oscurecimiento). f. Med. Privación total de la vista, ocasionada por lesión en la retina, en el nervio óptico o en el encéfalo, sin más señal exterior en los ojos que una inmovilidad constante del iris …   Diccionario de la lengua española

  • amaurosis — (Del gr. amaurosis, oscurecimiento < amauros, oscuramente.) ► sustantivo femenino MEDICINA Pérdida total, transitoria o definitiva de la vista, causada por lesión del nervio óptico o del cerebro y que sólo se manifiesta exteriormente por la… …   Enciclopedia Universal

  • amaurosis — n. partial or complete blindness. For example, amaurosis fugax is a condition in which loss of vision is transient. See also: Leber s congenital amaurosis Derivatives: amaurotic adj …   The new mediacal dictionary

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