A 58-year-old man with a history of hypertensive retinopathy presented with acute-onset, painless vision loss in his right eye accompanied by tinnitus and severe intermittent headaches. His extraocular movements were full, and he had no other neurologic deficits. His visual acuity was 20/400 OD and 20/30 OS, respectively, and his fundi were notable for bilateral optic nerve edema. Results of recent computed tomography and angiography of the head and neck and magnetic resonance imaging of the brain and orbits were reportedly normal, and lumbar puncture revealed an opening pressure of 26 cm H₂O (normal range, 6 to 25 cm H₂O) with elevated protein. The patient was given acetazolamide and referred to neuro-ophthalmology.

一名有高血压视网膜病史的 58 岁男性出现急性发作的右眼无痛性视力丧失，伴有耳鸣和严重的间歇性头痛。他的眼外运动很充分，并且没有其他神经系统缺陷。他的视力分别为 20/400 OD 和 20/30 OS，他的眼底明显有双侧视神经水肿。据报道，近期头颈部计算机断层扫描和血管造影以及大脑和眼眶的磁共振成像结果正常，腰椎穿刺显示开放压力为 26 cm H ₂ O（正常范围，6 至 25 cm H ₂ O）与升高的蛋白质。患者服用乙酰唑胺并转诊至神经眼科。