Convergence insufficiency and square wave jerks in PSP

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Identifier Convergence_Insufficiency_and_SWJ_in_PSP
Title Convergence insufficiency and square wave jerks in PSP
Subject Convergence, Alignment, Convergence Insufficiency, Square Wave Jerks
Creator Daniel R. Gold, DO, Departments of Neurology, Ophthalmology, Neurosurgery, Otolaryngology - Head & Neck Surgery, Emergency Medicine, and Medicine, The Johns Hopkins School of Medicine
Description This is a 70-yo-woman with progressive supranuclear palsy with complaints of difficulty reading. Her husband noticed that she would frequently close one eye when attempting to read, and words were not clear on the page, and this would in fact improve by covering one eye. On her exam, she had a 1 prism diopter (PD) esodeviation with Maddox rod testing at distance (difficult to appreciate subtle refixation saccades with alternate cover testing due to her square wave jerks), and with alternate cover testing at near, there was a 10 PD exotropia. Additionally, her near point of convergence was about 20 cm (normal is <10 cm), and her convergence amplitude was 4 PD (base out prism - normal is >15 PD). Convergence insufficiency is common following concussion/TBI or with parkinsonism. Square wave jerks are common in PSP, and hers are shown here as well.
Publisher Spencer S. Eccles Health Sciences Library, University of Utah
Date 2017
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
Language eng
ARK ark:/87278/s6m07z61
Setname ehsl_novel_gold
Date Created 2017-06-22
Date Modified 2018-01-22
ID 1253803
Reference URL