Methods The patients were randomly divided into three groups, excision of Müller'muscle, lengthening of the levator muscle and Müller'muscle, levator muscle marginal myotomy were carried in group Ⅰ( eyes), group Ⅱ( eyes)and group Ⅲ( eyes) respectively.
Methods The patients were randomly divided into three groups, excision of Müller'muscle, lengthening of the levator muscle and Müller'muscle, levator muscle marginal myotomy were carried in group Ⅰ( eyes), group Ⅱ( eyes)and group Ⅲ( eyes) respectively.
方法 将患者随机分为三组,其中组Ⅰ( 眼)采用Müller肌切除术、组Ⅱ(眼)采用提上睑肌-Müller肌延长术、组Ⅲ(眼) 采用提上睑肌肌缘切开术矫正退缩的上睑。