HA is a 25-year-old man who was struck by a car while riding his bike. He was thrown onto the pavement and suffered head injury with a concussion. He was evaluated in the emergency room with CT scanning and no skull fracture was noted. He was admitted for overnight observation in the hospital. The next morning he complained of hazy vision in his right eye. An ophthalmology consult was obtained and the examination found vision OD of 20/80 and OS of 20/20. A 2+ afferent pupil defect was noted in the right eye. Slit-lamp and fundus examination were unremarkable. The CT scan was reviewed and showed widening of the right optic nerve sheaths (Fig. 207).
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