Definitions for "Nystagmus"
A rapid involuntary oscillation of the eyeballs.
Involuntary rhythmic movements of the eyes. Most commonly, movements consist of a slow movement of both eyes in one direction, followed by a fast corrective movement (a jerk) in the opposite direction. Nystagmus can be either a sign of disease in eye movement pathways (in brainstem or cerebellum) or a normal physiological response to certain stimuli. See caloric nystagmus, optokinetic nystagmus and postrotational nystagmus.
Involuntary rapid movement of one or both eyes where the eyes appear to be dancing or "jiggling" in a rhythmic motion.