采用眼外肌延长术联合拮抗肌折叠术矫正大角度外斜视３０例，证实眼外肌延长术能使肌张力以最大限度放松，达到外直肌后徒１０～１２ｍｍ的效果，在矫正大角度斜视中起良好作用，且可减少肌折叠长度，避免用力牵拉眼肌所致眼心反射。治疗良好率达８６．６６％。是一种简单、快速、安全、有效的手术方法。 The use of extraocular muscle lengthening combined with antagonistic muscle fold surgery to correct large angle exotropia in 30 cases confirmed that extraocular muscle lengthening muscle tension to maximize relaxation to reach the external rectus posterior 10 ~ 12mm effect in the correction of large angle Strabismus play a good role, and can reduce the length of muscle fold, avoid hard eye strain caused by eye reflex. Good treatment rate of 86.66%. Is a simple, fast, safe and effective surgical methods.