Transient vision loss associated with Barlow's syndrome.

Barlow's syndrome, also known as mitral valve prolapse, is a common and generally benign cardiological condition. Various reports have implicated this syndrome in the precipitation of embolic oculo-ischemic events. A 33-year-old male presented with complaints of unilateral transient vision loss over a six-month period. Auscultation revealed a mid-systolic click and late systolic murmur, classic of Barlow's syndrome. Referral and subsequent echocardiography confirmed the diagnosis. Mitral valve prolapse should be considered in the differential diagnosis of transient vision loss in a young patient.