(KBD) Professor of Neurology and Ophthalmology, Director of Neuro-Ophthalmology, John A. Moran Eye Center, University of Utah School of Medicine, Salt Lake City, Utah; (DMJ) Neuro-Ophthalmologist, Marshfield Clinic, University Iowa College of Medicine, Iowa City, Iowa
Subject
Opsoclonus
Description
Example of patients with opsoclonus, a saccadic abnormality. Discussion of characteristics of opsoclonus, such as involuntary, rapid, brief, random, conjugate saccades. Discussion of possible causes, including brain stem encephalitis (as in first patient), a paraneoplastic effect, tumors, and drug toxicity. Thought to be related to a disorder of the pause cells. Demonstration of obsoclonic movement being brought out by shifts in gaze. Demonstration of patient, whose lateral cerebellar hemispheric function is not too bad, performing finger-outstretched finger test.
