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Cortical Vision Loss as a Prominent Feature of H1N1 Encephalopathy

Pula, John H. MD; Issawi, Ahmad MD; DeSanto, Jeffrey R. MD; Kattah, Jorge C. MD

Journal of Neuro-Ophthalmology: March 2012 - Volume 32 - Issue 1 - p 48–50
doi: 10.1097/WNO.0b013e31823fd913
Clinical Observation

Abstract: A 20-year-old woman infected with the 2009 H1N1 strain of influenza A developed bilateral visual loss. Brain MRI showed restricted diffusion of the parietal and occipital lobes, and her spinal fluid did not contain inflammatory cells. This report describes an unusual case of H1N1 influenza A virus infection primarily affecting the posterior visual pathways.

Departments of Neurology and Neuro-ophthalmology (JHP, JCK), Neurosurgery (AI), and Radiology (JRD), University of Illinois College of Medicine at Peoria, Peoria, Illinois.

Address correspondence to John H. Pula, MD, Department of Neurology and Neuro-ophthalmology, University of Illinois College of Medicine at Peoria, 530 NE Glen Oak Avenue, Peoria, IL 61637; E-mail:

The authors report no conflicts of interest.

© 2012 Lippincott Williams & Wilkins, Inc.