From Dr. Agarwal's Eye Hospital and Eye Research Centre (Kumar, Agarwal, Sivagnanam, Chandrasekar, Venugopal) and the M.N. Eye Hospital (Madhivanan), Chennai, India.
From Dr. Agarwal's Eye Hospital and Eye Research Centre (Kumar, Agarwal, Sivagnanam, Chandrasekar, Venugopal) and the M.N. Eye Hospital (Madhivanan), Chennai, India.
J Cataract Refract Surg. 2018 Apr;44(4):479-486. doi: 10.1016/j.jcrs.2018.01.025.
To compare the pseudophakodonesis of in-the-bag intraocular lens (IOL) and a secondary fixated IOL by tracking the Purkinje image IV.
Dr. Agarwal's Eye Hospital and Eye Research Centre, Chennai, India.
Prospective case series.
The IOL movement was recorded via slitlamp videography (DC3), streamed in video editor (Pinnacle), and evaluated by ImageJ analysis. The positional difference of Purkinje IV in relation to the stationary image Purkinje I at 3 random timeframes was measured. Pseudophakodonesis was quantified, compared, and correlated clinically.
The study comprised 127 eyes that had posterior chamber IOLs (PC IOLs) (n = 50), anterior chamber IOLs (AC IOLs) (n = 20), iris-claw IOLs (n = 20), glued IOLs (n = 30), and sutured scleral-fixated IOLs (n = 7). The iris-claw IOL showed significant difference in Purkinje IV at various timeframes (P = .0418) whereas others showed no significant change. On comparison of the Purkinje IV difference, there was a significant difference between the PC IOL and the iris-claw IOL (P = .0001), the glued IOL and the iris-claw IOL (P = .0020), and the AC IOL and the iris-claw IOL (P = .0302). The iris-claw IOL showed significant exaggeration of the position of Purkinje IV (P = .0395) after saccade. Pseudophakodonesis seemed mild (difference < 0.5 mm) in the PC IOL (68%), glued IOL (53.3%), and AC IOL (50%); moderate in the scleral-fixated IOL (71.4%); and severe (≥ 1.0 mm) in the iris-claw IOL (55%).
Positional difference in Purkinje IV was highest in iris-claw IOLs and lowest in PC IOLs.
通过跟踪 IV 型普尔金耶像比较囊袋内人工晶状体（IOL）和二次固定 IOL 的假性晶状体移位。
印度钦奈的 Agarwal 博士眼科医院和眼科研究中心。
前瞻性病例系列。
通过裂隙灯摄像（DC3）记录 IOL 运动，在视频编辑器（Pinnacle）中流式传输，并使用 ImageJ 分析进行评估。在 3 个随机时间框架下，测量与固定普尔金耶 I 像相关的 IV 型普尔金耶像的位置差异。定量比较和临床相关分析假性晶状体移位。
该研究包括 127 只眼，其中有后房 IOL（PC IOL）（n=50）、前房 IOL（AC IOL）（n=20）、虹膜夹型 IOL（n=20）、粘合法 IOL（n=30）和巩膜固定缝合 IOL（n=7）。在不同时间点，虹膜夹型 IOL 的 IV 型普尔金耶像差异有统计学意义（P=0.0418），而其他类型 IOL 无显著变化。比较 IV 型普尔金耶像差异，PC IOL 与虹膜夹型 IOL（P=0.0001）、粘合法 IOL 与虹膜夹型 IOL（P=0.0020）和 AC IOL 与虹膜夹型 IOL（P=0.0302）之间存在显著差异。虹膜夹型 IOL 在扫视后明显夸大了普尔金耶 IV 像的位置（P=0.0395）。假性晶状体移位在 PC IOL（68%）、粘合法 IOL（53.3%）和 AC IOL（50%）中较轻（差异<0.5mm）；在巩膜固定缝合 IOL（71.4%）中为中度；在虹膜夹型 IOL（55%）中为重度（≥1.0mm）。
在虹膜夹型 IOL 中，普尔金耶 IV 像的位置差异最大，而在 PC IOL 中则最小。
