NYSTAGMUS

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Involuntary movements of the eyeballs; its presence or absence is used to diagnose a variety of neurological and visual disorders

Classified under:

Nouns denoting acts or actions

Hypernyms ("nystagmus" is a kind of...):

eye movement (the movement of the eyes)

Hyponyms (each of the following is a kind of "nystagmus"):

physiological nystagmus (small involuntary tremors of the eyeballs; when it is eliminated by stabilizing the image on the retina, visual perception fades rapidly from fatigue of the retinal receptors)

rotational nystagmus (nystagmus caused by the body rotating rapidly; large slow movements of the eyeballs are in the direction of rotation)

post-rotational nystagmus (nystagmus caused by suddenly stopping the rapid rotation of the body; large slow movements of the eyeballs are in the direction opposite to the direction of rotation)

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