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目的：探讨上睑提肌折叠缩短术在先天性上睑下垂治疗中的疗效及手术方法。方法对38例轻、中度上睑下垂患者采用改良上睑提肌折叠缩短术治疗，设计重睑切口，水平切开眼轮匝肌至睑板前筋膜，在眶隔与上睑提肌腱膜之间分离粘连，沿上睑提肌腱膜向上分离至节制韧带（whitnallu 韧带），根据下垂程度将上睑提肌、Mǘller′s 肌分内中外三点折叠缝合至睑板上缘（即睑板上1/3），其余部分连续缝合。修剪多余皮肤及眼轮匝肌后缝合切口。结果38例患者中23例双眼，15例单眼，获随访6~12个月。治愈35例，占92.1%，欠矫正3例。过度矫正1例，无穹窿部结膜脱垂，无暴露性角膜炎，效果满意。结论改良上睑提肌 Mǘller′s 肌折叠缩短术治疗先天性上睑下垂是一种可靠有效、创伤较小且容易掌握的手术方法。“,”Objective To explore the effect and operating procedures for modified musculi levator palpebrae superios Muller′s musculi folding and shortening in correction of congenital ptosis. Methods A total of 38 patients with mild or moderate ptosis were treated with modified muscular levator palpebrae superios folding and shortening. The treatment was designed for double - eyelid incision with horizontal incision from muscular orbicularis oculi to pretarsal fascia,and to separate the stickiness between septa orbitale and muscular levator palpebrae superios along muscular levator palpebrae superios aponeurosis up to Whitnallu ligament,with inside - middle - outside folding suture of muscular levator palpe-brae superios and Mǘller′s muscle to the upper edge of tarsus(i. e. 1 / 3 tarsus)according to the degree of ptosis,with continuous suture of the rest parts,and trimmed excess skin and muscular orbicularis oculi,then sutured the incision. Results Among these 38 patients,both eyes were cor-rected in 23 cases and one eye was corrected in 15 cases. After follow - up for 6 to 12 months,35 cases were cured,accounting for 92. 1% ;and 3 cases failed. No case had been over - corrected,there was no prolapse of conjunctival fornix and exposed keratitis occurred and the effect was satisfactory. Conclusion The modified muscular levator palpebrae superios - Mǘller′s muscular folding and shortening in correction of congenital ptosis is a reliable,effective and easy surgical procedure with less injury in correction of congenital ptosis.