A 88-year-old woman with a history of diabetes mellitus, hypertension presented to the emergency department after an unilateral blindness initiating 9 hours prior to attendance. In the emergency department (ED), the patient's vital signs were as follows: blood pressure was 176/89 mmHg, heart rate 117/min, respiratory rate 19/min and body temperature 38.6 o C. Physical examination was normal except presence of total blindness on her visual field. Urgent bedside emergency depar tment ocular ultrasonographic examination of was performed.