Optometry Research Today is a free monthly online journal that collates and summarizes the latest research about Optometry, including details on myopia, optometric practice, therapy.

Occlusive retinal vasculitis in a patient with West Nile virus.

Teitelbaum BA, Newman TL, Tresley DJ

Illinois College of Optometry, Chicago, Illinois, USA. bteitelb@ico.edu

BACKGROUND: West Nile virus (WNV) was first identified in the United States in 1999. In addition to a spectrum of systemic manifestations, several ocular conditions secondary to the virus have been reported, including chorioretinitis, uveitis and optic neuritis. Age and diabetes mellitus (DM) have been reported to be associated risk factors for the more severe forms of the systemic disease. Only seven cases of occlusive retinal vasculitis have been reported in patients with WNV infection. CASE HISTORY: A 60-year-old Asian male presented with complaints of decreased vision in his left eye. He had been hospitalised approximately seven weeks earlier with meningo-encephalitis secondary to presumed WNV infection, at which time he was also diagnosed with DM. The visual loss coincided with the manifestation of systemic WNV infection. Old peripheral chorioretinal lesions without active inflammation in both eyes were consistent with WNV infection. In addition, retinal haemorrhage and cotton wool spots were noted in the posterior pole of both eyes with severe macular ischaemia in the left eye. CONCLUSION: Occlusive retinal vasculitis is an uncommon ocular manifestation of WNV, which should be suspected in patients with meningitis or encephalitis who reside in endemic areas with ocular findings of the disease.

Published 25 October 2007 in Clin Exp Optom, 90(6): 463-7.
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