Arcus senilis

Arcus senilis
A cloudy opaque arc or circle around the edge of the eye, often seen in the eye of the elderly.

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arcus se·nil·is -sə-'nil-əs n a whitish ring-shaped or bow-shaped deposit in the cornea that frequently occurs in old age

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a greyish line in the periphery of the cornea, concentric with the edge but separated from it by a clear zone. It begins above and below but may become a continuous ring. It consists of an infiltration of fatty material and is common in the elderly. When it occurs in younger people it may indicate abnormal fat metabolism, but there is great racial variation in its incidence. It never affects vision.

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a. corneae.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Arcus senilis — Classification and external resources Four representative slides of corneal arcus arcus deposits tend to start at 6 and 12 o clock and fill in until becoming completely circumferential. There is a thin, clear section separating the arcus from the …   Wikipedia

  • Arcus senīlis — Arcus senīlis, s. Altersring …   Meyers Großes Konversations-Lexikon

  • ARCUS SENILIS — (gerontoxon), старческая дуга, помутнение в остальном нормальной роговой оболочки в виде узкого серпа или кольца на ее периферии. Наружная граница A. s. очерчена резко и отделяется от края роговицы узким прозрачным промежутком; внутренняя граница …   Большая медицинская энциклопедия

  • Arcus senilis — Als Arcus senilis (corneae) (auch Arcus lipoides corneae, Greisenbogen oder Gerontoxon) wird ein durch Lipideinlagerung bedingter schmaler, vom Hornhautrand (Limbus) abgesetzter Trübungsring der bradytrophen Cornea des Auges bezeichnet. Er ist… …   Deutsch Wikipedia

  • arcus senilis — /ahr keuhs seuh nuy lis/, Ophthalm. the appearance of a yellowish gray lipid ring around the margin of the cornea, occurring in aging persons. [1785 95; < L arcus senilis lit., old man s bow] * * * …   Universalium

  • arcus senilis — corneal arcus a greyish line in the periphery of the cornea, concentric with the edge but separated from it by a clear zone. It begins above and below but may become a continuous ring. It consists of an infiltration of fatty material and is… …   The new mediacal dictionary

  • arcus senilis — (син.: gerontoxon, старческая дуга) стойкое помутнение роговицы дегенеративного характера, наблюдающееся в пожилом возрасте и имеющее форму дуги или кольца, расположенного концентрически относительно лимба; развитие А. (с.) s. связано с… …   Большой медицинский словарь

  • arcus senilis — noun A faint whitish ring around the iris in elderly people; discoloration of the iris with age …   Wiktionary

  • arcus senilis — [ˌα:kəs sɪ nʌɪlɪs] noun Medicine a narrow opaque band encircling the cornea, common in old age. Origin L., lit. senile bow …   English new terms dictionary

  • arcus senilis —   n. senile ring ; whitish ring round iris in eyes of old people …   Dictionary of difficult words

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