Nystagmus refers to rapid involuntary movements of the eyes that may be:
Depending on the cause, these movements may be in both eyes or in just one eye. The term "dancing eyes" has been used in regional dialect to describe nystagmus.
Back and forth eye movements; Involuntary eye movements; Rapid eye movements from side to side; Uncontrolled eye movements; Eye movements - uncontrollable
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Source: ADAM Encyclopedia
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