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Homonymous Hemianopia 

Homonymous Hemianopia
Chapter:
Homonymous Hemianopia
Author(s):

Matthew J. Thurtell

, and Robert L. Tomsak

DOI:
10.1093/med/9780190603953.003.0012
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date: 04 June 2020

Homonymous hemianopia is caused by unilateral lesions involving the retrochiasmal visual pathways or primary visual cortex. Common causes of homonymous hemianopia include stroke, tumor, and trauma. In this chapter, we begin by reviewing the clinical features that can help to localize the lesion and determine its cause. We next discuss the diagnostic evaluation of homonymous hemianopia, emphasizing the importance of formal visual field testing. We list causes of homonymous hemianopia that produce minimal or no abnormalities on neuroimaging, which include migraine, seizures, encephalopathies, and neurodegenerative disorders. Lastly, we discuss the implications of homonymous hemianopia for driving and strategies for rehabilitation.

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