nystagmus

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nys·tag·mus

 (nĭ-stăg′məs)
n.
A rapid, involuntary, oscillatory motion of the eyeball.

[New Latin, from Greek nustagmos, drowsiness.]

nys·tag′mic (-mĭk) adj.

nystagmus

(nɪˈstæɡməs)
n
(Medicine) involuntary movement of the eye comprising a smooth drift followed by a flick back, occurring in several situations, for example after the body has been rotated or in disorders of the cerebellum
[C19: New Latin, from Greek nustagmos]

nys•tag•mus

(nɪˈstæg məs)

n.
a persistent, rapid, involuntary side-to-side eye movement.
[1815–25; < New Latin < Greek nystagmós nodding, derivative of nystázein to nod]
nys•tag′mic, adj.

nystagmus

uncontrollable and rapid movement of the eyeball in any direction. — nystagmic, adj.
See also: Eyes
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nystagmus - involuntary movements of the eyeballs; its presence or absence is used to diagnose a variety of neurological and visual disorders
eye movement - the movement of the eyes
physiological nystagmus - small involuntary tremors of the eyeballs; when it is eliminated by stabilizing the image on the retina, visual perception fades rapidly from fatigue of the retinal receptors
rotational nystagmus - nystagmus caused by the body rotating rapidly; large slow movements of the eyeballs are in the direction of rotation
post-rotational nystagmus - nystagmus caused by suddenly stopping the rapid rotation of the body; large slow movements of the eyeballs are in the direction opposite to the direction of rotation
Translations
nystagmus

nys·tag·mus

n. nistagmo, espasmo involuntario del globo ocular;
palatal ______ palatal.

nystagmus

n nistagmo
References in periodicals archive ?
1-023-1) (5 pages) (operating a motor vehicle on a public way while under the influence of alcohol; defendants contention that (1) the judge abused his discretion in admitting limited evidence of the defendant's performance on a horizontal gaze nystagmus (HGN) test; (2) the admission of such testimony interfered with the defendant's ability to cross-examine the arresting officer; and (3) the testimony misled the jury) (No.
Several of the tests that Carroll used on Ebner, such as horizontal gaze nystagmus (an involuntary eye twitch), nose touching, standing on one foot, and walking heel to toe, are good measures of alcoholic intoxication.
All other forms point to a central problem such as direction changing, disconjugate, seesaw, pendular, congenital and gaze nystagmus.
No vertical gaze movement restriction, vertical gaze nystagmus or burst of consecutive saccades (opsoclonus) noted during clinical examination.
District courts can vary on accepted practices; for a charge of drunken driving, some may accept portable breath tests or the horizontal gaze nystagmus, a field sobriety test, the chief said.