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Encyclopedia > Ocular flutter

Ocular flutter is an opsoclonic disorder in which the eyes incontinuously saccadically moves around the point of fixation in the field of vision. Opsoclonus refers to a uncontrolled movement of the eyes. ... This article or section is missing references or citation of sources. ... The term visual field is sometimes used as a synonym to field of view, though they do not designate the same thing. ...


  Results from FactBites:
 
Saccadic Nystagmus (1715 words)
Ocular flutter denotes an instability of the eye where after the main saccade, the eye makes another saccade in the opposite direction.
Ocular flutter is generally caused by cerebellar disorders or brainstem disorders (Bergenius, 1986; Schon, 2001).
Ocular flutter due to disease is rare but about 8% of the normal population can voluntarily produce ocular flutter, usually during convergence.
SACCADE TESTS (4365 words)
Ocular myasthenia is usually associated with ptosis and ocular findings are usually affected by small amounts of intravenous edrophonium (the "tensilon" test), but positive ocular tensilon tests have also been reported in the Eaton-Lambert syndrome (Dell'Osso et al, 1983).
One cause is the opsoclonus syndrome or it's relative, ocular flutter.
Patients having rapid changes in oculomotor function, such as ocular myasthenics are particularly prone to developing a glissadic pattern, because the amount of neural firing required to obtain a given eye position and to hold it there against elastic restoring forces is constantly varying.
  More results at FactBites »


 

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