nys·tag·mus (n -st g m s)n. A rapid, involuntary, oscillatory motion of the eyeball. [New Latin, from Greek nustagmos, drowsiness.] nys·tag mic (-mk) adj. |
nystagmus [nɪˈstægməs]
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
nystagmus
uncontrollable and rapid movement of the eyeball in any direction. — nystagmic, adj.
See also: Eyes
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | 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 |
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