Objective To evaluate the effect of correcting upper eyelid retraction in patients with iatrogenic ophthalmopathy by a new technique of modified transsection and longitudinal suture levator muscle prolongation treatment.Methods The traditional levator muscle flap trapezoidal incision was changed into horizontal incision,According to the amount of upper eyelid retraction we designed a transverse incision with 1 ∶ 2 in the central part of levator aponeurosis.Along the line of incision was designed transverse incision of Mulller's muscle combined with levator aponeurosis complex was designed,with longitudinal suture of incision.Results Five patients (6 eyes) with iatrogenic upper eyelid retraction were treated by this method.The follow up was performed for 3 to 12 months.All were satisfied with good cosmetic results,the degree of bilateral corneal exposure was symmetrical,with no recurrence and complications,except for 1 cases of unilateral upper eyelid retraction width slightly asymmetry.Conclusions The application of modified levator muscle prolongation treatment is not only quite simple,easy to adjust in operation,but also with reliable effect and less complication.It is effective for iatrogenic upper eyelid retraction range from mild to moderate degrees of correction.