Optic Chiasm Involvement on MRI With Ethambutol-Induced Bitemporal Hemianopia

While ethambutol optic neuropathy usually causes central or cecocentral scotomas, bitemporal visual field defects also have been reported. The pathogenesis of the bitemporal hemianopia has not been established. This article describes magnetic resonance imaging abnormalities involving the optic chias...

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Bibliographic Details
Published in:	Journal of neuro-ophthalmology Vol. 34; no. 2; pp. 155 - 158
Main Authors:	Osaguona, Vivian B, Sharpe, James A, Awaji, Samira A, Farb, Richard I, Sundaram, Arun N.E
Format:	Journal Article
Language:	English
Published:	United States by North American Neuro-Ophthalmology Society 01-06-2014
Subjects:	Aged Antitubercular Agents - adverse effects Ethambutol - adverse effects Female Hemianopsia - chemically induced Hemianopsia - pathology Humans Magnetic Resonance Imaging Optic Chiasm - pathology Visual Acuity - drug effects
Online Access:	Get full text
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Summary:	While ethambutol optic neuropathy usually causes central or cecocentral scotomas, bitemporal visual field defects also have been reported. The pathogenesis of the bitemporal hemianopia has not been established. This article describes magnetic resonance imaging abnormalities involving the optic chiasm in a patient with bitemporal visual field loss. To our knowledge, these neuroimaging findings have not been previously described in association with ethambutol therapy.
Bibliography:	ObjectType-Case Study-2 SourceType-Scholarly Journals-1 ObjectType-Feature-4 content type line 23 ObjectType-Report-1 ObjectType-Article-3 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	1070-8022 1536-5166
DOI:	10.1097/WNO.0000000000000095