Abstract
Objective To compare the surgical outcomes of bilateral lateral rectus muscle recession (BLR) and unilateral medial rectus muscle resection and lateral rectus muscle recession (R&R) procedure on the nondominant eye for the patients of basic intermittent exotropia. Methods A total of 116 patients who underwent either BLR (group A) or R&R (group B) surgery were reviewed. Surgical outcome between the 2groups were analyzed. Surgical outcome was considered successful if there was a strabismus ≤ 10 PD. Results Among the patients in group A, 46 of the 58 patients (79.31%) had a satisfactory outcome, and 12 patients (20.69%) were with undercorrection. There was no case of overcorrection in group A. In group B, 52 of the 58patients (89.66%) had a satisfactory outcome, and 2 patients (3.45%) were with undercorrection. There were 4patients (6.89%) were overcorrected in group B. One overcorrected patient in group B had satisfactory outcome after conjunctival release operation. Conclusions Surgical success was significantly higher in the R&R group than in the BLR group, but its overcorrect rate is significantly higher. Key words: Intermittent; Exotropia; Surgery
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