目的：探究双眼外直肌后徙术治疗基本型间歇性外斜视的疗效。方法：前瞻性选取2022年10月至2023年10月本院收治的基本型间歇性外斜视患者104例为研究对象，按随机数排秩法将患者分为研究组52例与对照组52例，对照组予以单眼一退一截术治疗，研究组予以双眼外直肌后徙术治疗，比较两组手术成功率、术后斜视度、术后外斜漂移量的差距。结果：两组术后1 d，1、3、6 mo成功率比较无差异(均P>0.05)。两组术后1、3、6 mo的6 m眼位斜视度、33 cm眼位斜视度均低于术后1 d(均P<0.05)，但两组术后1 d，1、3、6 mo的6 m眼位斜视度、33 cm眼位斜视度比较均无差异(均P>0.05)。两组术后不同时间外斜漂移量比较有差异(均P<0.05)，两组术后3、6 mo外斜漂移量与术后1 mo相比均升高，且术后6 mo外斜漂移量大于术后3 mo(均P<0.05)，但研究组术后3、6 mo外斜漂移量均低于对照组(均P<0.001)。结论：双眼外直肌后徙术治疗基本型间歇性外斜视可有效减少患者术后外斜偏移量，远期稳定性较好。

AIM: To explore the efficacy of bilateral lateral rectus recession in the treatment of basic intermittent exotropia. METHODS: A prospective study was conducted on 104 patients with basic intermittent strabismus admitted to our hospital from October 2022 to October 2023, patients were randomly divided into a study group of 52 cases and a control group of 52 cases using a random number ranking method. The control group received unilateral recess-resect, while the study group received bilateral lateral rectus recession, the differences in surgical success rate, postoperative strabismus, and postoperative exotropia drift were compared between two groups.RESULTS: There was no statistically significant difference between the two groups at 1 d, 1, 3, and 6 mo after surgery(all P>0.05). The strabismus in the 6 m and 33 cm eye positions at 1, 3, and 6 mo after surgery were lower than those at 1 d after surgery(all P<0.05). However, there was no statistically significant difference in the strabismus in the 6 m and 33 cm eye positions between the two groups at 1 d, 1, 3, and 6 mo after surgery(all P>0.05), and there was statistical significant difference between the two groups in exotropia drift at different postoperative time points(all P<0.05). The exotropia drift of both groups increased at 3 and 6 mo after surgery compared to 1 mo after surgery, and the exotropia drift at 6 mo after surgery was greater than that at 3 mo after surgery(all P<0.05). However, the exotropia drift of the study group at 3 and 6 mo after surgery was lower than that of the control group(all P<0.001). CONCLUSION: Bilateral lateral rectus recession for the treatment of basic-type intermittent exotropia effectively reduces the amount of postoperative exotropia drift, and it has better long-term stability.