nystagmus n : involuntary movements of the eyeballs; the presence or absence of nystagmus is used to diagnose a variety of neurological and visual disorders
EtymologyFirst attested in 1798. From nystagmus from etyl grc νυσταγμός from νυστάζω.
- rapid involuntary eye
- 1970: For months Travis had seen his solitary figure, shoulders hunched inside the flying jacket, in more and more newsreels, as an extra in war films, and then as a patient in an elegant ophthalmic film on nystagmus — JG Ballard, The Atrocity Exhibition