BACKGROUND XEN® gel stent (Allergan, Dublin/Republic of Ireland) is a relatively new microinvasive glaucoma device providing an ab-interno approach to the subconjunctival space for aqueous drainage and reduction of intraocular pressure. It is thought to be less invasive, reduce surgical time and post-operative infection rates compared with traditional glaucoma procedures. Little information however, has been published regarding complications and subsequent management. CASE PRESENTATION The authors highlight five complicated cases of XEN® stent insertion, how they were managed and key learning points. Cases include: entire stent found at the bottom of the anterior chamber several months after uncomplicated insertion, stent broke into multiple pieces during manipulation within subconjunctiva, XEN45 stent migrated into the anterior chamber 7 months post-operatively and a case of limbal-based conjunctival dissection during open revision which lead to additional scarring around the stent and subsequent raised intraocular pressure. CONCLUSIONS We present some new and interesting complications of XEN implant as well as potential management options. This can assist clinical decision-making and enable better pre-operative discussions with patients regarding risks of surgery.

中文翻译：

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XEN®支架并发症：一个病例系列。

背景技术XEN®凝胶支架（爱尔兰都柏林的艾尔根（Allergan））是一种相对较新的微创性青光眼装置，可为结膜下间隙提供ab-interno入路以进行房水引流并降低眼内压。与传统的青光眼手术相比，它被认为具有较小的侵入性，减少了手术时间并减少了术后感染率。然而，关于并发症和后续治疗的信息很少。案例介绍作者重点介绍了XEN®支架插入的五个复杂案例，如何处理以及关键学习要点。病例包括：简单插入后几个月，整个支架位于前房底部，在结膜下操作时支架破裂成多个碎片，手术后7个月，XEN45支架移入前房，在开放翻修过程中发生基于角膜缘结膜剥离的病例，这导致支架周围进一步形成疤痕，并随后导致眼内压升高。结论我们介绍了XEN植入物的一些新的有趣的并发症以及潜在的治疗方案。这可以帮助临床决策，并可以与患者就手术风险进行更好的术前讨论。