Downbeat nystagmus and convergence spasm

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Identifier DBN and convergence spasm
Title Downbeat nystagmus and convergence spasm
Subject Convergence-abnormal, Range-abnormal, Sixth nerve palsy, Convergence spasm, Cerebellar pathology, Jerk nystagmus, Downbeat nystagmus
Creator Daniel R. Gold, DO, Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, The Johns Hopkins School of Medicine
Description This is a 60-yo-woman with vertical oscillopsia related to her downbeat nystagmus, and diplopia related to an intermittent esotropia. When the esotropia was present, with versions there were bilateral abduction deficits. With ductions and the vestibulo-ocular reflex, it was apparent that the range of abduction OU was normal and convergence spasm was diagnosed. MRI showed few scattered non-specific white matter lesions and an "eye of the tiger" sign of the basal ganglia, although metabolic, mitochondrial, and PANK2 testing was unrevealing. While convergence spasm is often a functional disorder, it can also be organic, and is typically seen with midbrain lesions. In her case, there was no clear midbrain pathology to explain convergence spasm, nor was there clear cerebellar pathology to explain her downbeat nystagmus. Number of Figures and legend for each: 0 Number of Videos and legend for each: 1, Patient with downbeat nystagmus and organic convergence spasm
Publisher Spencer S. Eccles Health Sciences Library, University of Utah
Date 2016
Type Image/MovingImage
Format video/mp4
Rights Management Copyright 2016. For further information regarding the rights to this collection, please visit:
Collection Neuro-ophthalmology Virtual Education Library: NOVEL
ARK ark:/87278/s6qr85tg
Setname ehsl_novel_gold
Date Created 2016-09-07
Date Modified 2017-05-22
ID 187735
Reference URL
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