The most common etiology is ischemic optic neuropathy.
常见的发病原因是缺血性视神经病变。
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Methods An giograph and field image of 25 cases (39 eyes) with anterior ischemic optic neuropathy were analyzed.
方法对25例（39眼）前部缺血性视神经病变的造影及视野图像进行分析。
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Objective To evaluate the efficacy of stellate ganglion block (SGB) in the treatment of ischemic optic neuropathy (ion) as compared with that of steroids.