Terson's syndrome presenting as an ophthalmic emergency

Purpose: To report an unusual case of Terson's syndrome caused by a ruptured intracranial aneurysm presenting as an ophthalmic emergency with visual loss, without any neurological features at the time of presentation. Methods: Case report. A 38‐year‐old man was referred to the eye emergency department with sudden loss of vision in both eyes. Vitreous haemorrhage was noted in both eyes. There was no history of loss of consciousness or headaches and no signs of meningeal irritation at presentation. The patient subsequently developed progressive neck stiffness and headache. Results: Neuro‐imaging studies revealed a subarachnoid haemorrhage resulting from a ruptured carotid‐ophthalmic artery aneurysm. Conclusions: It is important to consider Terson's syndrome, a potentially life‐threatening condition, in any patient presenting with bilateral vitreous haemorrhage. Some patients may not show any headache, neurological deficits or signs of meningeal irritation at presentation but may develop them later on.