Terson's syndrome

A 49-year-old woman presented with an acute intense headache with nausea and vomiting, followed by loss of consciousness. CT scan of head showed diffuse subarachnoid haemorrhage involving the interpeduncular cistern from rupture of a right internal carotid artery aneurysm, which was successfully treated by coil embolisation. On waking in intensive care unit, she reported bilateral central visual loss due to red scotomas. She had reduced visual acuity and unsteady gait. Her visual impairment deteriorated over a few days such that she could only see lights in central visual field and blurred outlines in the peripheral fields. Funduscopy showed vitreous haemorrhage. …