Objective      To determine the prospective efficacy of improved supernormal lateral rectus muscle recession in the surgery of sensory exotropia and analyze the value.        Methods      Twelve cases of sensory exotropia treated by improved supernormal lateral rectus muscle recession in our department from May 2012 to September 2013 were retrospectively analyzed. The angles of exotropia were higher than 50

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and the squint eyes had poor fixation. Supernormal lateral rectus muscle recession (the lateral rectus muscle was sutured at 12.0 mm behind the original insertion) and medial rectus muscle resection (4.0-7.0 mm) were performed on the squint eyes. The eye position

eye movement

appearance and vision function wer

e observed after surgery.        Results      The follow-up lasted for 13-27 months. All the cases acquired alignment of the eyes and satisfactory appearance

but the abduction function was slightly limited. All the squint eyes showed stable fixation vision

but significant binocular vision was not established.        Conclusion      Supernormal lateral rectus muscle recession can stabilize the position of lateral rectus muscle

and reduce the muscles needing to surgery. The surgery is safe and feasible

and has stable long-term effect.