作者于8年内研究了100例连续的成年人的视网膜出血,病人部是发病原因不明,出现脑症状后住院的,除14名昏迷病人未得到病史者外,近期有头部外伤史或眼,头部有外伤痕迹者均已除外.男性49例,女性51例,多系中年人,常以头痛,呕吐,突然晕厥,很快昏迷或惊厥发病. The authors studied retinal hemorrhage in 100 consecutive adults over a period of 8 years. The patient’s department was hospitalized for unknown etiology and brain symptoms. Except for 14 comatose patients who had not been previously reported, there was a history of head trauma or ocular, Head trauma were excluded except for 49 cases of male and female 51 cases, and more middle-aged people, often with headache, vomiting, sudden syncope, and soon coma or convulsion.