- a congenital or acquired persistent, rapid, involuntary, and oscillatory movement of the eyeball, usually from side to side.
Origin of nystagmus
Examples from the Web for nystagmus
Historical Examples of nystagmus
On the right, nystagmus on fixation, fingers are counted at 5-6 feet.
These were nystagmus, paresis of facial muscles, laryngeal spasms, etc.
Nystagmus occasionally occurs in monocular fixation (with exclusion of the other eye).
Not to complicate the question, however, I have excluded all cases of nystagmus from the following investigation.
In Figure L 3a the nystagmus occurs only in males and descends through unaffected females.
- 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
Word Origin for nystagmus
medical Latin, from Greek nystagmos "nodding, drowsiness," from nystazein "to nod, be sleepy," from PIE *sneud(h)- "to be sleepy."
- A rapid, involuntary oscillatory motion of the eyeball.