BACKGROUND To determine characteristics and management of consecutive or recurrent strabismus secondary to stretched scar. METHODS This is a retrospective review of all patients diagnosed with late secondary consecutive or recurrent strabismus due to stretched scar from 2012 to 2017. The diagnosis of stretched scar was made in any case of late (≥ 1 month) consecutive or recurrent strabismus associated with underaction of the previously operated muscle. The diagnosis was confirmed intraoperatively by negative forced duction test and the characteristic appearance of the scar tissue. Surgical correction involved excision of the scar tissue with muscle re-attachment to the sclera using non-absorbable sutures. Study parameters include improvement in secondary deviations, degree of muscle underaction and diplopia. RESULTS 21 consecutive and 6 recurrent cases of stretched scar -induced strabismus were identified and all cases were associated with variable degrees of limited ocular duction. After surgical correction of the stretched scar, consecutive deviations in the form of consecutive esotropia and exotropia were corrected by means of 26.1PD and 65.6PD while recurrent deviations in the form recurrent exotropia and recurrent hypertropia were corrected by means of 34.3PD and 11PD respectively with significant improvement of limited ocular ductions. 21 patients had diplopia at presentation and all were improved after surgery. CONCLUSION management of stretched scar -induced secondary strabismus by excision of the stretched scar and muscle fixation to the sclera using non-absorbable sutures significantly corrects secondary deviations and improves limitation of ocular duction.

中文翻译：

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拉伸疤痕诱发的继发性斜视的处理。

背景技术为了确定继发性或继发性斜视继发于瘢痕的特征和处理。方法这是一项回顾性研究，回顾性分析了2012年至2017年间所有因延展性瘢痕而被诊断为继发继发性斜视或复发性斜视的患者。在任何迟发性（≥1个月）连续斜视或复发性斜视与行为不足相关的病例中均进行了瘢痕性增生的诊断。之前操作过的肌肉 术中通过负引力试验和瘢痕组织的特征性外观证实了诊断。手术矫正包括使用不可吸收的缝线将瘢痕组织切除，并通过肌肉将其重新附着在巩膜上。研究参数包括继发偏差，肌肉活动不足和复视的改善。结果鉴定出21例连续的和6例复发的瘢痕性斜视引起的斜视，所有病例均与不同程度的有限眼导引力有关。手术矫正拉伸的瘢痕后，分别通过26.1PD和65.6PD纠正连续内斜视和外斜视形式的连续偏差，而分别通过34.3PD和11PD纠正反复外斜视和复发性肥大形式的复发偏差有限的眼导的显着改善。21例出现复视，所有患者术后均得到改善。