先天性晶状体不全脱位是一种较为罕见的晶状体悬韧带异常的疾病，其手术治疗极具挑战性。以人工晶状体悬吊为代表的传统手术方式易出现囊袋破裂、玻璃体疝、人工晶状体脱位和继发性青光眼等严重并发症。近年来，以重建囊袋悬韧带隔为目标，新型囊袋辅助装置的应用极大程度提高了先天性晶状体不全脱位的手术成功率。然而，以改良式张力环为代表的囊袋辅助装置在我国仍难以得到普及且操作繁琐。因此，如何最大程度利用普通张力环等最常见的装备，设计出一种安全可靠手治疗先天性晶状体不全脱位的手术方式是眼科界亟待解决的问题。本文将介绍一种二期张力环缝合固定治疗先天性晶状体不全脱位手术技术。该技术仅需使用普通张力环，具有操作简单安全、术后效果稳定和易于技术推广的优点。

Congenital ectopia lentis is a relatively rare zonular disorder of the lens, and its surgical treatment is extremely challenging. The traditional surgical procedures represented by intraocular lens suspension are prone to result in serious complications such as capsular bag rupture, vitreous hernia, intraocular lens dislocation and secondary glaucoma. In recent years, with the goal of reconstructing the capsular bag–zonules diaphragm, the application of new capsular bag-assisted devices has greatly improved the surgical success rate of congenital ectopia lentis. However, the capsular-assisted devices, such as modified capsular tension ring, are still difficult to be popularized in China and the surgical procedures are complicated. Therefore, how to maximize the use of common equipment such as normal capsular tension rings and design a safe and reliable surgical method for the treatment of congenital ectopia lentis is an urgent issue for ophthalmologists. This article aims to introduce a two-stage capsular tension ring fixation for the treatment of congenital ectopia lentis, which has many advantages such as simple and safe operation, stable postoperative effect and less requirements for special equipment, and is worth promoting in clinical practice.

目的：探讨一种改良的简便的儿童晶状体不全脱位摘除技术的手术方法及临床效果。方法：对23例(40眼)晶状体不全脱位儿童采用改良手术方法进行脱位晶状体摘除，术中先做巩膜隧道切口，3个角膜缘穿刺口，经穿刺口放置前房维持器，在维持前房灌注下，截囊针撕囊，水分离后抽吸针头吸净晶状体内容物。撤去前房维持器，用撕囊镊和线镊将囊袋从主切口拖出。若有玻璃体脱出则行前部玻璃体切除术，然后行人工晶状体巩膜缝线固定术。术后中位随访39.0个月，观察其手术效果。结果：术后患儿平均裸眼视力为(0.44±0.22)LogMAR，平均最佳矫正视力为(0.20±0.16)LogMAR，较术前均显著提高(P<0.001)。所有患儿术中眼内压稳定，术中术后没有继发视网膜脱离、脉络膜上腔出血等眼底并发症的发生。结论：改良的儿童晶状体不全脱位摘除技术具有对玻璃体扰动少、手术时间较短、简便易学、对手术设备要求低的优点，值得临床推广。

Objective: To investigate the operation method and clinical effects of a modified-simple technique in children with subluxated lens extraction. Methods: Lens extraction was performed in 40 eyes of 23 children. During operation, the scleral tunnel and 3 lateral corneal incision were made, and anterior chamber maintainer was inserted through one corneal incision. Under stable anterior chamber perfusion, anterior capsulorrhexis was made by needle capsulotome. After hydro-dissection, the content of lens was withdrawn by suction needle completely. Then anterior chamber maintainer was removed, and the capsular bag was dragged out by capsulorhexis forceps and fixation forceps. Anterior vitrectomy was performed if there was prolapse of vitreous. Then scleral intraocular lens fixation was performed. The surgical effects were observed at median 39.0 months postoperative. Results: After surgery, the average uncorrected visual acuity was (0.44±0.22) LogMAR, the average best corrected distant visual acuity was (0.20±0.16) LogMAR. The uncorrected visual acuity and best corrected distant visual acuity were improved postoperative(P<0.001). The intraocular pressure of all patients was stable during operation. During and after operation, there were no fundus complications, such as secondary retinal detachment and suprachoroidal hemorrhage. Conclusion: Modified-simple technique of subluxated lens extraction of children has little disturbance on vitreous and takes shorter time of operation. It is simple, easy to learn and requires simple surgical equipment. This modified technique deserves to be generalized.