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急性缺血性视神经病变系视神经的营养血管发生急性循环障碍而出现的一种营养不良性疾患。若以视网膜中央动脉进入视神经处为界(约在眼球后10mm),可将视神经分为前、后两部分。那末,由于这两部分的血液供应不同,发生缺血时的临床表现也迥然不同。在缺血的早期,前者呈特征性的视乳头水肿,而后者却表现为正常的视乳头外观。关于急性前部缺血性视神经病变的临床特征、诊断及治疗,本刊已有综述。而对于后部缺血性视神经病变(简称PION),由于人们对视神经后部(包括眶内段、管内段及颅内段)
Acute ischemic optic neuropathy is a type of malnutrition that occurs as a result of acute circulatory disorders in the vegetative vessels of the optic nerve. If the central retinal artery into the optic nerve at the community (about 10mm after the eye), the optic nerve can be divided into before and after the two parts. Then, due to the different parts of the blood supply, the clinical manifestations at the time of ischemia are quite different. In the early stages of ischemia, the former is characterized by papilledema, which shows the appearance of a normal papilla. On the clinical features of acute ischemic optic neuropathy, diagnosis and treatment, this article has been reviewed. For posterior ischemic optic neuropathy (referred to as PION), because people on the posterior portion of the optic nerve (including the orbital segment, intracranial and intracranial segments)