目的：探讨人工晶状体(IOL)预先巩膜悬吊在严重晶状体半脱位中的应用效果。方法：选取 2018年12月至2022年7月四川省人民医院收治的>180°的严重晶状体半脱位患者8例(8 眼)。术中避开脱位的晶状体，预先将IOL悬吊于玻璃体腔，再将晶状体托起置于IOL上方，必要时辅助以虹膜拉钩，稳定晶状体，确保超声乳化手术安全完成。结果：严重的晶状体半脱位患者8例，其中晶状体核N1-N3硬度的患者各1例，单独使用IOL预先巩膜悬吊于术中稳定脱位的晶状体，3例超声乳化手术均顺利完成；达N4患者3例、N5患者2例，其中4例在虹膜拉钩的辅助下安全完成超声乳化；有1例N5的患者，由于悬韧带损伤超过270°，在将晶状体托起放置于IOL之上时，坠入玻璃体腔，给予玻璃体腔超声粉碎处理。8例患者术后IOL均居中，视力有不同程度的提高，眼压正常，未见严重并发症。结论：在严重晶状体半脱位的超声乳化手术中，对于N2~N3的软核，IOL预先巩膜悬吊可以良好地稳定晶状体，确保超声乳化手术的顺利进行；对于N4~N5的硬核，IOL预先巩膜悬吊可以作为一种辅助方法，联合虹膜拉钩共同稳定晶状体，确保超声乳化手术的安全进行。

Objective: To investigate the effect of intraocular lens (IOL) pre-suspension in thetreatment of severe lens subluxation. Methods: Retrospective case study. From December 2018 to July 2022, 8 eyes of 8 patients with severe lens subluxation greater than 180 degrees admitted to our hospital were selected. During surgery, the IOL should avoid the subluxated lens and be pre-suspended in the vitreous cavity, and then the lens is lifted and placed above the IOL. If necessary, the iris hook can be used to stabilize the lens to ensure the safe completion of phacoemulsification. Results: There were 8 patients with severe subluxation of lens. Among them, the hardness of 3 patients' lens nucleus ranged from N1 to N3. In these 3 patients, we used the IOL pre-suspension alone to stabilize the subluxated lens, and phacoemulsification in these 3 patients was successfully completed. Three patients had N4 and 2 patients had N5, of which 4 patients underwent phacoemulsification safely with the assistance of iris hook. In another patient with N5, the lens fell into the vitreous cavity during surgery (the suspension ligament rapture greater than 270 degrees) when it was lifted and placed on the IOL which was crushed by the vitreous cavity ultrasound. After surgery, the IOL was centered in all 8 patients, visual acuity was improved to varying degrees, intraocular pressure was normal, and no serious complications were observed. Conclusions: In severe lens subluxation surgery, IOL presuspension in soft nuclei of N2 to N3 can stabilize the lens well and ensure the safety of phacoemulsification. For hard nuclei N4 to N5, IOL presuspension can be used as an auxiliary method in combination with iris hook to stabilize the lens and ensure the safety of phacoemulsification.

Ahmed青光眼引流阀植入术作为难治性青光眼的主要治疗方案，能很大程度控制眼压，且疗效和预后均优于常规滤过性手术。但是远期引流盘周围被纤维包裹后会阻塞房水流出，引起术后高眼压，导致手术失败。因此，解决引流盘纤维包裹能很大程度地提高青光眼阀植入术后远期成功率，这也是目前的研究热点。目前临床上主要采用术前预防及术后二次操作对纤维包裹进行干预，但长期效果欠佳。本文就青光眼引流阀纤维包裹发生的组织病理学及分子机制、临床目前解决方案、前沿研究进展以及对Ahmed青光眼阀门的材料改造的探索进行综述。

Ahmed glaucoma valve implantation, as the main treatment option for refractory glaucoma, can control intraocular pressure (IOP) to a large extent. And its efficacy and prognosis are superior to those of conventional filtration surgery. IOP is well-controlled in the early postoperative stages. However, long-term fibrosis of encapsulated bleb inhibits fluid exchange and causes elevated IOP, leading to surgical failure. Therefore, treating fibrosis of encapsulated bleb can improve the long-term success rate after glaucoma valve implantation, which is also a research hotspot. Currently, the main clinical interventions are preoperative prophylaxis and postoperative secondary operations for fiber wrapping, but its long-term efficacy is not satisfactory. This article reviews the occurrence, histopathology and molecular mechanism of fibrous encapsulation, treatment in a clinical setting, cutting-edge research progress, and exploration on material modification of Ahmed glaucoma valve.