= heterotropia; n.
squint: any abnormal alignment of the two eyes. The strabismus is most commonly horizontal – convergent strabismus (or esotropia) or divergent strabismus (exotropia) – but it may be vertical (hypertropia, in which the eye looks upwards, or hypotropia, in which it looks downwards). In rare cases both eyes look towards the same point but one is twisted clockwise or anticlockwise in relation to the other (cyclotropia). Double vision is possible, but the image from the deviating eye usually becomes ignored. In cyclotropia the image is not separated from the normal one but rotated across it. Most strabismus is concomitant, i.e. the abnormal alignment of the two eyes remains fairly constant, in whatever direction the person is looking. This is usual with childhood squints. Strabismus acquired by injury or disease is usually incomitant, i.e. the degree of misalignment varies in different directions of gaze.

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  • Strabismus — Stra*bis mus, n. [NL., fr. Gr. ?, fr. ? to squint, fr. ? distorted, squinting.] (Med.) An affection of one or both eyes, in which the optic axes can not be directed to the same object, a defect due either to undue contraction or to undue… …   The Collaborative International Dictionary of English

  • Strabismus — (griech.), s. Schielen …   Meyers Großes Konversations-Lexikon

  • Strabismus — (grch.), das Schielen (s.d.) …   Kleines Konversations-Lexikon

  • Strabismus — Strabismus, Strabosität, griech. deutsch, Schielen …   Herders Conversations-Lexikon

  • strabismus — (n.) a squint, 1680s, from Modern Latin, from Gk. strabismos, from strabizein to squint, from strabos squinting, squint eyed. Earlier in anglicized form strabism (1650s) …   Etymology dictionary

  • strabismus — ► NOUN ▪ the condition of having a squint. ORIGIN Greek strabismos, from strabizein to squint …   English terms dictionary

  • strabismus — [strə biz′məs] n. [ModL < Gr strabismos < strabizein, to squint < strabos, twisted < IE * streb < base * (s)ter , stiff, taut > START, STARE] a disorder of the muscles of the eyes, as cross eye, in which both eyes cannot be… …   English World dictionary

  • Strabismus — For the protein Strabismus, see Strabismus (protein). Strabismus Classification and external resources Strabismus prevents bringing the gaze of both eyes to the same point in space. ICD 10 H …   Wikipedia

  • Strabismus — Mässiger Strabismus divergens (Außenschielen ) des linken Auges Mit Schielen oder Strabismus (strabos, στραβός, griech.: „Schieler“) wird eine Augenmuskelgleichgewichtsstörung bezeichnet, die sich in einer Stellungsanomalie beider Augen… …   Deutsch Wikipedia

  • Strabismus — A condition in which the visual axes of the eyes are not parallel and the eyes appear to be looking in different directions. In divergent strabismus, or exotropia, the visual axes diverge. If the visual axes converge, it is called convergent… …   Medical dictionary

  • strabismus — strabismal, strabismic, strabismical, adj. strabismally, adv. /streuh biz meuhs/, n. Ophthalm. a disorder of vision due to a deviation from normal orientation of one or both eyes so that both cannot be directed at the same object at the same… …   Universalium

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