Objective To explore the staged treatment strategy for asymmetric bilateral congenital blepharoptosis. Methods From 2011 to 2013,30 cases of asymmetric bilateral congenital blepharoptosis were treated according to the staged strategy.At first stage,severe side(amountof descentover upper limbus:moderate to severe)was treated with levator aponeurosis resection and advancement combined with tarsus resection under general anesthesia.After 3 to 6 months,the contralateral side was treated with tarsus resection or levator aponeurosis resection under local anesthesia.All the patients were followed up for 3months to 2 years,ptosis correction and bilateral asymmetry weremeasured.Resu lts In total 60 eyes of 30 cases,sufficient correction was achieved in 37 eyes(61.7%),moderate correction in 23 eyes(38.3%).No under correction or overcorrection was observed.As to symmetry evaluation,23 cases(76.5%)showed good results and 7 cases (23.5%)showed fair results.No poor symmetry was observed.Conclusion Compared to our previous treatment experience, the staged treatment strategy can achieve better symmetry results for asymmetric bilateral congenital blepharoptosis.