Method The Operational design was to correct A-exotropia first by superior obliquus and lateral rectus weaken and DVD second .

• 方法手术设计为分次进行,首先行水平肌手术联合双眼上斜肌鞘内断腱术矫正外斜A征,再择期行上直肌减弱术矫正分离性垂直偏斜(DVD)。