To investigate the protective effect and mechanism of betaxolol on optic nerves after experimental retinal ischemia-reperfused injury.

探讨倍他洛尔对实验性网膜缺血再灌注损伤后经的保护作用能的作用机制。

Light stimulates the optic nerve.

光刺经。

Conclusion The hypopsia after cataract surgery in the senile patients aged over 60 were mainly caused by keratopaphy, optic nerve atrophy and macularpathy of high myopia.

结论角膜病、经萎缩高度近黄斑病是导致60岁以上老年人白内障术后低力的主要原因。