AskDefine | Define nystagmus

Dictionary Definition

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

User Contributed Dictionary

English

Etymology

First attested in 1798. From nystagmus from etyl grc νυσταγμός from νυστάζω.

Pronunciation

  • /nɪ'stægməs/

Noun

  1. rapid involuntary eye movement, usually lateral
    • 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

Extensive Definition

Privacy Policy, About Us, Terms and Conditions, Contact Us
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2
Material from Wikipedia, Wiktionary, Dict
Valid HTML 4.01 Strict, Valid CSS Level 2.1