AIM:To explore the surgical techniques and the clinical effects of continuous pupillary collar cutting of phacoemulsification in microcoria cataract.METHODS:Twenty-three cases(34 eyes) of microcoria cataract were operated using manual pupilloplasty first,then were performed by continuous pupillary collar cutting,phacoemulsification and foldable intraocular lens implantation.RESULTS:During the follow-up of 6 months,all the cases got better visual acuity,the corrected visual acuity was less than 0.1 in 3 eyes,being 0.1-0.3 in 3 eyes,0.3-0.6 in 12 eyes and above 0.6 in 16 eyes.CONCLUSION:By using continuous pupillary collar cutting of phacoemulsification in microcoria cataract,this technique ensures the safety during surgery as well as improves the visual acuity with few complications.