目的：探究囊袋张力环(CTR)植入对五种新一代人工晶状体(IOL)计算公式[Barrett Universal Ⅱ (BUⅡ), Emmetropia Verifying Optical (EVO), Kane, Pearl-DGS和Hill-RBF 2.0]在高度近视患者中预测准确性的影响。方法：前瞻性病例对照研究。观察2020年12月—2021年9月于陕西省眼科医院就诊的眼轴长度(axial length,AL)≥ 27.00 mm行白内障联合IOL(AR40E, 美国强生)植入术的患者。术眼随机分为植入CTR组(A组)和未植入CTR组(B组)。术前根据IOLMaster700测量眼部参数，使用BU Ⅱ公式计算所需IOL度数。记录术后1周、1个月及3个月实际等效球镜度(spherical equivalent,SE)，计算并比较五种公式预测误差(prediction error,PE)和绝对屈光预测误差(absolute Error,AE)。将A组和B组分别分为A1组(27.00 mm ≤ AL ≤ 30.00 mm)和A2组(AL>30.00 mm)；B1组(27.00 mm ≤ AL ≤ 30.00 mm)和B2组(AL >30.00 mm)，分析不同AL范围内CTR植入对公式预测准确性的影响。结果：共纳入患者63例(89眼)，年龄(55.93±10.17)岁，术前AL为(30.30±2.18)mm。A组、A1组及A2组术后不同时间SE值比较差异均无统计学意义(P>0.05)，B组、B1组及B2组术后1周与1个月，术后1周与3月SE值分别比较差异有统计学意义(P<0.05)，术后1个月与3个月比较，差异无统计学意义(P>0.05)。A组、B组、A1组、A2组、B1组和B2组各组中五种公式的AE值比较差异均无统计学意义(均P>0.05)。植入CTR后五种公式的预测误差变化比较差异无统计学意义(P>0.05)。结论：对于AL ≥27.00 mm的白内障患者，植入CTR组术后1周屈光度趋于稳定，未植入组术后1个月屈光度趋于稳定。CTR植入对五种公式预测准确性和选择无影响，五种计算公式均可正常选择。

Objective: To investigate the predictive accuracy and effect of capsular tension ring (CTR) implantation with five new generation intraocular lens (IOL) calculation formulas [Barrett Universal Ⅱ (BU Ⅱ), Emmetropia Verifying Optical(EVO), Kane, Pearl-DGS and Hill-RBF 2.0] in high myopia patients. Methods: This is a prospective case-control study. The patients were enrolled with an axial length (AL)≥27.00 mm, and underwent cataract surgery with AR40E IOL implantation at the Shaanxi Eye Hospital from December 2020 to September 2021. The patients were randomly assigned to the CTR implantation group (group A) and the non-CTR implantation group (group B). With the ocular parameters measured by the IOLMaster700, the IOL power was calculated with the BUⅡformula before surgery. The postoperative actual equivalent spherical diopter (SE) were recorded,and the predicted error (PE) and absolute error (AE) using the five formulas were recorded and compared at 1 week, 1 month, and 3 months, repsectively. Group A was divided to A1 (27.00 mm ≤ AL ≤ 30.00 mm) and A2 (AL>30.00 mm), and group B was divided to B1 (27.00 mm ≤ AL ≤ 30.00 mm) and B2 (AL>30.00 mm). The effects of CTR implantation and the accuracy of the formulas were analyzed with different AL ranges. Results: A total of 63 patients (89 eyes) were included, aged (55.93±10.17) years old, with preoperative AL (30.30± 2.18)mm. There was no statistically significant difference in SE between groups A, A1, and A2 (P>0.05) at different postoperative times. While there was a statistically significant difference in SE between groups B, B1, and B2 (P < 0.05) at 1 week and 1 month after surgery, and between 1 week and 3 months after surgery. There was no statistically significant difference between 1 month and 3 months after suergery (P>0.05). There was no significant difference in the AE using the five formulas among groups A, B, A1, A2, B1, and B2 (P>0.05). There was no statistically significant difference in prediction error changes among the five formulas after CTR implantation (P>0.05). Conclusion: For cataract patients with AL ≥ 27.00 mm, the refractionvalue in the CTR implantation group tended to stabilizeafter one week of surgery. While in the non-CTR implantation group, the refractionvalue tended to stabilize after one month. CTR implantation had no effect on the accuracy and selection of the five formula, and the five IOL calculation formulas can be normally selected.

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.

临床上囊袋张力环(capsular tension ring,CTR)与睫状体接触导致的反复持续性高眼压较为少见，本文报告一例改良型CTR植入术后反复持续性高眼压的病例，行“巩膜悬吊线松解术”后高眼压状态有效缓解，考虑可能与巩膜固定缝线过紧，造成改良型CTR局部与睫状体相接触，刺激睫状体分泌过量房水有关。

Recurrent intraocular hypertension caused by contact between capsular tension ring (CTR) and ciliary body is rare clinically. We report a case of recurrent intraocular hy pertension after modified CTR implantation. The IOP returned to normal levels when released the scleral suture. We speculated that the ciliary process irritated by MCTR might increase aqueous humor secretion because of a tight scleral suture.