Rift Valley Fever: ocular manifestations

Ocular manifestations resulting from Rift Valley Fever [RVF] infection were studied in 42 patients. All complain of sudden loss of vision in one or both eyes following acute febrile illness. The characteristic lesion is macular or paramacular white lesion with ill defined edges [infarcet retinitis]. Vasculitis, vascular occlusion, hemorrhage and edema are common in most of eyes. Patients were monitored during a 6-month convalescence. Approximately, more than one-half of the patients showed a permanent loss in the visual acuity