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J Neuroophthalmol. 2014 Jun;34(2):155-8. doi: 10.1097/WNO.0000000000000095.

Optic chiasm involvement on MRI with ethambutol-induced bitemporal hemianopia.

Author information

1
Neuro-Ophthalmology Section, Division of Neurology, Departments of Medicine, Ophthalmology and Vision Sciences (VBO, JAS, SAA, ANES) and Medical Imaging (RIF), University Health Network, University of Toronto, Toronto, Ontario, Canada.

Abstract

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.

PMID:
24647140
DOI:
10.1097/WNO.0000000000000095
[Indexed for MEDLINE]

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