School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.
Curr Eye Res. 2020 Jan;45(1):17-23. doi: 10.1080/02713683.2019.1645183. Epub 2019 Jul 29.
: To investigate the relationship between capsular bend type and posterior capsule opacification (PCO) at a three-dimensional (3D) level using high-speed swept-source optical coherence tomography (SS-OCT).: This was a retrospective study. A total of 99 eyes that underwent standard cataract surgery with phacoemulsification 2 years ago were analyzed. Standard SS-OCT radial scanning was performed in all eyes and the obtained photos were used for morphological observations of the capsular bend-IOL complex, the adhesion of posterior capsule to the IOL optic, and the position of the anterior capsulorhexis. Digital retroillumination photographs were taken of the posterior capsule of each eye to evaluate PCO (scoring and area).: In terms of the PCO score and area, there was no statistical difference between eyes with complete and incomplete adhesion of posterior capsule to IOL (both > .05), whereas the partial overlap group showed a statistical difference greater than the total overlap group ( < .05). There were two types of capsular bends, completed adhesion (CA) and incomplete adhesion (IA). IA was divided into funnel adhesion (IA-F), parallel adhesion (IA-P), and detached adhesion (IA-D). The incomplete adhesion index (IAI) varied between eyes and ranged from 0 to 1. The PCO score and area in the high IAI group (higher than 0.50) were significantly greater than the low IAI group (< 0.50) ( < .05). In addition, the PCO score and area were significantly higher in the cohort with at least one IA-D capsular bend in six districts to the group that did not have IA-D capsular bend ( < .05).: Complete or incomplete adhesion of the posterior capsule to the IOL optic may not be necessary for the development of PCO. Our study suggests that capsular bend type may be used as an index to predict PCO.
: 运用高速扫频源光学相干断层扫描（SS-OCT）三维（3D）水平研究囊袋弯曲类型与后发性白内障（PCO）的关系。: 这是一项回顾性研究。共分析了 99 只 2 年前接受过白内障超声乳化吸除联合标准人工晶状体（IOL）植入术的眼。所有眼均行标准 SS-OCT 放射状扫描，并对获得的照片进行了囊袋弯曲-IOL 复合体形态观察、后囊与 IOL 光学部黏附、前囊切缘位置的观察。对每只眼的后囊进行数字后照像，以评估 PCO（评分和面积）。: 在后发性白内障评分和面积方面，后囊与 IOL 光学部完全或不完全黏附的眼之间没有统计学差异（均 >.05），而部分重叠组的统计学差异大于完全重叠组（ <.05）。囊袋弯曲有两种类型，完全黏附（CA）和不完全黏附（IA）。IA 又分为漏斗状黏附（IA-F）、平行黏附（IA-P）和分离黏附（IA-D）。各眼之间的不完全黏附指数（IAI）不同，范围为 0 至 1。IAI 较高（高于 0.50）的眼的 PCO 评分和面积明显大于 IAI 较低（小于 0.50）的眼（ <.05）。此外，在 6 个象限至少有一个 IA-D 囊袋弯曲的组中，PCO 评分和面积明显高于没有 IA-D 囊袋弯曲的组（ <.05）。: 后囊与 IOL 光学部的完全或不完全黏附可能不是 PCO 发生的必要条件。我们的研究表明，囊袋弯曲类型可用作预测 PCO 的指标。
