·AIM:To study the posterior capsular opacification(PCO)after implantation of foldable intraocular lens(IOL)with different size of the continuous curvilinear capsulorhexis(CCC).METHODS:A total of 164 cases 196 eyes underwent phacoemulsification with IOL implantation.The visual acuity,relationship of capsulorhexis and IOL optic port and the incidence of PCO under different CCC after surgery were evaluated.Follow-up postoperatively for 12-26(average 16.3)months,the relation between two size of the CCC with PCO grade(Ⅰ-Ⅳ)after cataract surgery were studied.RESULTS:The percent of after cataract was 35.0%(42/120)in CCC with overall IOL,the CCC with no-overall IOL group was 53.9%(41/120).The incidence of after cataract was significant difference in the two groups.CONCLUSION:The size of the CCC is related to PCO,the CCC with overall IOL can reduce the occurrence of after cataract.