Methods Ligate rat left common carotid artery 1 h, then reperfuse, inject verapamil intraperitoneally at the same time, exam retina ERG in 1 h, 6 h, 12 h, 24 h, 48 h, 72 h.

• 方法 :通过结扎大鼠左颈总动脉 1h ,然后再灌注 ,同时向腹腔注射异博定 ,检测 1h ,6h ,12h ,2 4h ,48h ,72h视网膜erg的变化。