Nystagmus

n.

1.

(Med.) A rapid involuntary oscillation of the eyeballs.

Noun

1.

nystagmus - involuntary movements of the eyeballs; the presence or absence of nystagmus is used to diagnose a variety of neurological and visual disorders

motility, motion, move, movement, physiological nystagmus, post-rotational nystagmus, rotational nystagmus