Skew deviation

Skew deviation

Skew deviation is an unusual ocular deviation (strabismus), wherein the eyes move upward (hypertropia), but in opposite directions. Skew deviation is caused by abnormal prenuclear vestibular input to the ocular motor nuclei, most commonly due to brainstem or cerebellar stroke. Other causes include multiple sclerosis and head trauma. Skew deviation is usually characterized by torticollis (head tilting) and binocular torsion. The exact pathophysiology of skew deviation remains incompletely understood. Skew deviation appears to be a perturbation of the ocular tilt reaction, which is itself probably a vestigial righting response used to keep fish and other lateral-eyed animals properly oriented [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=16500212&dopt=Citation] .


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • skew deviation — a neurological condition of the eyes in which one eye turns down while the other turns up. It is seen in disorders of the cerebellum or brainstem. * * * downward and inward rotation of the eye on the side of the cerebellar lesion and upward and… …   Medical dictionary

  • skew deviation — a neurological condition of the eyes in which one eye turns down while the other turns up. It is seen in disorders of the cerebellum or brainstem …   The new mediacal dictionary

  • Skew — or skew lines lie on different planes. They are neither parallel nor intersecting.Mathematics*In geometry, straight lines in a space referred to as skew if they are neither parallel nor intersecting. *In statistics, skew is sometimes used as an… …   Wikipedia

  • skew — (v.) late 15c., from O.N.Fr. eskiuer shy away from, avoid, O.Fr. eschiver (see ESCHEW (Cf. eschew)). Meaning depict unfairly first recorded 1872, on notion of being slanted. Statistical sense dates from 1929. The adj. meaning slanting, turned to… …   Etymology dictionary

  • Отклонение Косое (Skew Deviation) — неврологическое расстройство, при котором один глаз движется вниз, в то время как другой вверх. Наблюдается при различных заболеваниях мозжечка или ствола головного мозга. Источник: Медицинский словарь …   Медицинские термины

  • Skew arch — A skew arch (also known as an oblique arch) is a method of construction that enables an arch bridge to span an obstacle at some angle other than a right angle. This results in the faces of the arch not being perpendicular to its abutments and its …   Wikipedia

  • Skew normal distribution — In probability theory and statistics, the skew normal distribution is a continuous probability distribution that generalises the normal distribution to allow for non zero skewness.The normal distribution is a highly important distribution in… …   Wikipedia

  • deviation — 1. A turning away or aside from the normal point or course. 2. An abnormality. 3. In psychiatry and the behavioral sciences, a departure from an accepted norm, role, or rule. SYN: deviance. 4. A statistical measure representing the …   Medical dictionary

  • skew — I. verb Etymology: Middle English, to escape, run obliquely, from Anglo French *eskiuer, eschiver to escape, avoid more at eschew Date: 15th century intransitive verb 1. to take an oblique course 2. to look askance transitive verb 1. to make, set …   New Collegiate Dictionary

  • skew — Synonyms and related words: aberrancy, aberration, agee, agee jawed, angle, angle off, askance, askant, askew, askewgee, asquint, asymmetric, awry, bear off, bend, bent, bias, branching off, catawampous, catawamptious, circuitousness, cockeyed,… …   Moby Thesaurus

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”