AIM:To investigate the methods and effect of treating after cataract after intraocular lens implantation withNd:YAG laser technique.METHODS:In 48 patients 51 eyes after posterior capsulectomy was performed with Nd:YAG laser for the treatment of after cataract after posterior chamber intraocular lens implantation.RESULTS:All the capsulotomies resulted in a central opening of the posterior capsule.The vision improve rate was 94%.CONCLUSION:Nd:YAG laser is a safe and effective technique for after cataract.The best treatment time,accurate operation and preventing complication may play the key role in improving the effect.