- Types:
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nystagmus
involuntary movements of the eyeballs; its presence or absence is used to diagnose a variety of neurological and visual disorders
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saccade
a rapid, jerky movement of the eyes between positions of rest
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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
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rotational nystagmus
nystagmus caused by the body rotating rapidly; large slow movements of the eyeballs are in the direction of rotation
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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
