ABSTRACT
A 62-year-old man noted blurry vision in his lower left visual field on awakening 2 days ago. The visual symptoms are stable since onset. His past medical history is positive for hypertension treated with a beta-blocking agent daily, and also for hypercholesterolemia under control with diet. His last appointment with his primary care doctor was 1 year ago. On examination, his vision is 20/20 OD and 20/25 OS. There is a 0.9 log unit RAPD OS. There is an inferior altitudinal visual field defect OS and a full field OD (Figures 4.1 and 4.2). The optic nerve OD has a small cup/disc ratio and there is optic nerve swelling OS (Figures 4.3 and 4.4). He denies any symptoms of temporal arteritis. His erythrocyte sedimentation rate and C-reactive protein are normal.
