Objective To evaluate the curative effect of large dose methyl-prednisoxlone on acute optic neuritis (AON) and to observe if it can retard AON s transformation to multiple sclerosis (MS).

• 目的评价大剂量甲泼尼龙治疗急性视神经炎(AON)的疗效,观察其延迟转化为多发性硬化(MS)的情况。