From the Ophthalmology Clinic Vista Sánchez Trancón, Badajoz, Spain (Sánchez-Trancón, Manito, Sierra, Serra); Centre of Physics, University of Minho, Braga, Portugal (Baptista).
J Cataract Refract Surg. 2023 Jul 1;49(7):732-739. doi: 10.1097/j.jcrs.0000000000001171.
To determine the predictors of the postoperative horizontal trabecular iris angle (TIA 750 ) after phakic posterior chamber implantable intraocular lens (IOL) surgery.
Ophthalmology Clinic Vista Sánchez Trancón, Badajoz, Spain.
Retrospective case series.
330 eyes implanted with spherical/toric implantable collamer lens (ICL) were included in this study. From 230 eyes implanted with 13.2 mm ICL, these were divided in modeling (n = 180) and evaluation group (n = 50). Two groups implanted with 12.6 mm and 13.7 mm (n = 50 each) were also used as evaluation. Anterior-segment optical coherence tomography was used preoperatively to perform anterior chamber biometry (angle-to-angle [ATA] distance, crystalline lens rise, anterior chamber depth [ACD], cornea sagittal depth, pupil diameter, nasal/temporal TIA 750 ); postoperatively for measuring the vault, pupil diameter and nasal/temporal TIA 750 . Corneal curvature and horizontal visible iris diameter were measured using optical tomography. Bivariate correlation analysis was used to determine associations between preoperative and postoperative horizontal TIA 750 with anterior chamber biometry, ICL-related parameters and age. Finally, a multivariate linear regression model was constructed for predicting the postoperative TIA 750 .
Horizontal TIA 750 reduced from 42.9 ± 8.0 degrees preoperatively to 24.4 ± 5.6 degrees postoperatively. Postoperative TIA 750 was positively correlated with the preoperative TIA 750 , cornea sagittal depth and ACD, and negatively associated with the vault. The main predictors of the postoperative TIA 750 were the preoperative parameters, TIA 750 , ICLsize - ATA and pupil diameter (adjusted- R2 = 0.39). The limits of agreement between predicted and real TIA 750 were close to ±10 degrees.
Implantation of a phakic posterior chamber implantable IOL leads to a reduction in TIA 750 and the main factors contributing for this are the preoperative TIA 750 aperture and the vault.
确定有晶状体眼后房型可植入式眼内透镜（ICL）手术后水平小梁虹膜角度（TIA750）的预测因素。
西班牙巴达霍斯 VistaSánchezTrancón 眼科诊所。
回顾性病例系列。
本研究纳入了 330 只植入球面/散光 ICL 的眼睛。在 230 只植入 13.2mm ICL 的眼睛中，将这些眼睛分为建模组（n=180）和评估组（n=50）。还使用两组各 50 只植入 12.6mm 和 13.7mm 的 ICL 作为评估。术前使用眼前节光学相干断层扫描进行前房生物测量（角到角[ATA]距离、晶状体抬高、前房深度[ACD]、角膜矢状深度、瞳孔直径、鼻侧/颞侧 TIA750）；术后测量拱高、瞳孔直径和鼻侧/颞侧 TIA750。使用光学断层扫描测量角膜曲率和水平可见虹膜直径。使用双变量相关分析确定术前和术后水平 TIA750 与前房生物测量、ICL 相关参数和年龄之间的相关性。最后，建立多元线性回归模型来预测术后 TIA750。
水平 TIA750 从术前的 42.9°±8.0°减少到术后的 24.4°±5.6°。术后 TIA750 与术前 TIA750、角膜矢状深度和 ACD 呈正相关，与拱高呈负相关。术后 TIA750 的主要预测因素是术前参数、TIA750、ICL 大小-ATA 和瞳孔直径（调整后的 R2=0.39）。预测和实际 TIA750 之间的一致性界限接近±10°。
植入有晶状体眼后房型 ICL 会导致 TIA750 减小，导致这种情况的主要因素是术前 TIA750 孔径和拱高。
