·AIM:To evaluate the effect of Nd∶YAG laser for after cataract.·METHODS:A total of 723 cases 770 eyes of after cataract were treated by Nd∶YAG laser.Different patients were treated according to different conditions.·RESULTS:The success rate was 99.1%.The follow-up time was 4-12 months.The average visual acuity of all cases was improved from 0.22 to 0.50.The complications included the damage of lens in 86 eyes(11.2%),transient high intraocular pressure in 7 eyes(0.9%)and vitreous hernia in 2 eyes(0.3%).·CONCLUSION:Nd∶YAG laser is a safe and effective method for posterior capsulotomy.Different treatment according to different patients can improve effect and safety.·