Rajavi Z, Ghadim H M, Nikkhoo M, Dehsarvi B
Emtam Hossien Hospital, Shahid Beheshti University of Medical Science, Tehran, Iran.
J Pediatr Ophthalmol Strabismus. 2001 Sep-Oct;38(5):273-7. doi: 10.3928/0191-3913-20010901-07.
To compare the results of hang-back and conventional recession surgery.
This randomized, double-blind, matched clinical trial comprised 30 patients with esotropia and 24 with exotropia. All ocular examinations before and at least 1.5 months after surgery were performed by an orthoptist who was unaware of the method of recession. All surgeries were performed by the same surgeon.
In patients with esotropia, deviation improved from 31+/-9 prism diopters (delta) preoperatively to 7+/-6 delta postoperatively for hang-back recession (n=15) and from 41+/-14 delta to 6+/-6 delta for conventional recession (n=15). Postoperative horizontal deviation was >10 delta in 40% of patients who underwent hang-back recession and 20% of patients who underwent conventional recession (P<.8). In patients with exotropia, deviation improved from 28.9+/-9 delta preoperatively to 0.5+/-11 delta postoperatively for hang-back recession (n=12) and from 29+/-8 delta to 6+/-6 delta for conventional recession (n=12). Postoperative horizontal deviation was >10 delta in 24% of patients who underwent hang-back recession and 17% of patients who underwent conventional recession (P<.2). Mean follow-up was 7 months.
Hang-back recession is an alternative to conventional rectus muscle recession, especially in children who have smaller globes and patients with myopia or collagen vascular diseases.
比较后徙悬吊术与传统后徙术的手术效果。
这项随机、双盲、匹配的临床试验纳入了30例内斜视患者和24例外斜视患者。所有手术前及术后至少1.5个月的眼科检查均由一名不了解后徙术方法的视光师进行。所有手术均由同一位外科医生实施。
在内斜视患者中，后徙悬吊术组（n = 15）的斜视度从术前的31±9棱镜度（Δ）改善至术后的7±6Δ，传统后徙术组（n = 15）则从41±14Δ改善至6±6Δ。后徙悬吊术组40%的患者术后水平斜视度>10Δ，传统后徙术组为20%（P<0.8）。在外斜视患者中，后徙悬吊术组（n = 12）的斜视度从术前的28.9±9Δ改善至术后的0.5±11Δ，传统后徙术组（n = 12）则从29±8Δ改善至6±6Δ。后徙悬吊术组24%的患者术后水平斜视度>10Δ，传统后徙术组为17%（P<0.2）。平均随访时间为7个月。
后徙悬吊术是传统直肌后徙术的一种替代方法，尤其适用于眼球较小的儿童、近视患者或胶原血管病患者。
