AIM:To compare the therapeutic method of posterior capsulorhexis with topical anesthesia by needling through corneoscleral limbus tunnel incision with that of YAG laser posterior capsulotomy on posterior capsular opacification.To evaluate the efficacy,safety and stability of posterior capsulorhexis.METHODS:An 1mm tunnel incisoon was stuck into by a diamond cutter from the cornescleral limbns atfer topical anesthesia was performed Postorior of intraoular lens was pricked into by a curved needle for dividing the thichened postorior capsiles.The efficacy and complication were observed.RESULTS:In 29 patients(32 eyes),whoes visual acuity was 1.0 account for 69.9% postoperatively,compared with preoperatively the visual acuitiy 0.06-0.1 without any discomfort and complication for the patients.CONCLUSION:Use of imported diamond cutter from Swizorland to discissio through tunnel incision is convenient and easy without any discomfort and complication for the patients.This method can be substituted by YAG laser posterior capsulotomy.