Ischaemic optic neuropathy is a well recognised cause of sudden visual loss in middle and late life. It is characterised by painless visual impairment, pale swelling of the optic disc and nerve fibre bundle field defects. Although some cases are due to cranial arteritis, the majority of patients suffer from non-arteritic diseases, particularly hypertension. The present study consists of a reveiw of 22 cases of ischaemic optic neuropathy. Apart from cranial arteritis and vascular disease, migraine and trauma appear to have a causal relationship to the disorder.
缺血性视神经病变是中老年人群突发视力丧失的一个公认病因。其特征为无痛性视力损害、视盘苍白肿胀以及神经纤维束视野缺损。尽管部分病例由颅动脉炎引起，但大多数患者患有非动脉炎性疾病，尤其是高血压。本研究对22例缺血性视神经病变病例进行了回顾。除颅动脉炎和血管疾病外，偏头痛和外伤似乎与该病症存在因果关系。
