患者女,22岁。妊娠2个月出现恶心、呕吐,于当地考虑“早孕反应”给予对症治疗。1个月前无明显诱因出现反应迟钝,主动言语明显减少,无发热及抽搐,未予注意。3天前患者突然出现双眼视力下降,行走不稳,2天前出现双耳听力下降入院。体检:光反射迟钝,双眼眼底视乳头水肿、视网膜出血 Female patient, 22 years old. 2 months of pregnancy nausea, vomiting, consider the local “early pregnancy response” to give symptomatic treatment. 1 month ago, there was no obvious incentive for unresponsive, active speech significantly reduced, no fever and convulsions, did not pay attention. 3 days ago, the patient suddenly appeared binocular vision loss, walking unsteadily, two days before the hearing loss of both ears admitted to hospital. Physical examination: slow light reflex, binocular papilledema, retinal hemorrhage