Purpose

To assess the morphologic and clinical features of posterior capsule-intraocular lens (IOL) interaction following cataract surgery with and without primary posterior continuous curvilinear capsulorrhexis (PPCCC) at a three-dimensional (3-D) level using Scheimpflug imaging.

Methods

This prospective intraindividual randomized comparative study comprised 56 patients (112 eyes) with age-related cataract who had bilateral cataract surgery and hydrophobic acrylic IOLs implantation. In randomized order, cataract surgery with PPCCC was performed in 1 eye (PPCCC group), and the posterior capsule was left intact in the fellow eye (NPCCC group). Scheimpflug imaging containing 25 images distributed in 360° was taken 1 day, 1 week, 1 month, and 3 months postoperatively.

Results

46 patients completed 3 months follow-up. Posterior capsule–IOL interaction can be morphologically classified into two types including complete adhesion and floppy shape in PPCCC group, and six types including full area wave, full area flat, concentric ring wave, concentric ring flat, sector, and complete adhesion in NPCCC group. The adhesion index (AI), defined as the proportion of complete adhesion of posterior capsule–IOL in 25 cross-section tomograms, was 0.45 ± 0.45, 0.79 ± 0.37, 0.92 ± 0.26 and 1.00 ± 0.00 in PPCCC group, while 0.05 ± 0.18, 0.41 ± 0.47, 0.87 ± 0.34, and 0.96 ± 0.21 in NPCCC group at 1 day, 1 week, 1 month and 3 months postoperatively, respectively (p = 0.001, 0.001, 0.338 and 0.151).

Conclusions

3-D Scheimpflug imaging was favorable in observing of posterior capsule–IOL interaction. Faster posterior capsule adhesion to the IOL was found in PPCCC group than in NPCCC group.

中文翻译：

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后囊 - 人工晶状体相互作用的三维评估有和没有原发性后囊撕裂：一个个体内随机试验

目的

使用 Scheimpflug 成像在三维 (3-D) 水平评估白内障手术后后囊 - 人工晶状体 (IOL) 相互作用的形态学和临床特征，无论有无原发性后连续曲线撕囊 (PPCCC)。

方法

这项前瞻性的个体内随机比较研究包括 56 名年龄相关性白内障患者（112 只眼），他们接受了双侧白内障手术和疏水性丙烯酸人工晶状体植入。以随机顺序，1只眼行PPCCC白内障手术（PPCCC组），对侧眼后囊完整（NPCCC组）。术后 1 天、1 周、1 个月和 3 个月拍摄了包含 25 张 360° 分布的图像的 Scheimpflug 成像。

结果

46例患者完成了3个月的随访。后囊-IOL相互作用在形态学上可分为PPCCC组完全粘连和松软状两种类型，NPCCC组包括全面积波、全面积扁平、同心环状波、同心环状扁平、扇形和完全粘附6种类型. 粘连指数（AI），定义为后囊-IOL在25张断层断层照片中完全粘连的比例，PPCCC组为0.45±0.45、0.79±0.37、0.92±0.26和1.00±0.00，而PPCCC组为0.05±0.18 , NPCCC 组术后 1 天、1 周、1 个月和 3 个月分别为 0.41 ± 0.47、0.87 ± 0.34 和 0.96 ± 0.21 ( p  = 0.001, 0.001, 0.338 和 0.151)。

结论

3-D Scheimpflug 成像有利于观察后囊-IOL 相互作用。PPCCC组后囊对IOL的粘连速度快于NPCCC组。