Silpa-Archa Sukhum, Samanwongthai Chitchanok, Nganthavee Variya, Charoensuk Korawin
Department of Ophthalmology, Rajavithi Hospital, College of Medicine, Rangsit University, 2, Phayathai Road, Ratchathewi District, Bangkok, Thailand.
Int J Retina Vitreous. 2025 Apr 2;11(1):39. doi: 10.1186/s40942-025-00666-5.
To evaluate methods of preoperative axial length (AL) estimation for intraocular lens (IOL) power calculation in patients with macula-off rhegmatogenous retinal detachment (RRD). These methods included optical biometry, A-scan biometry, and novel decision algorithms.
A retrospective analysis of prospectively collected data was conducted at a tertiary hospital from January 2018 to December 2023. Preoperative and postoperative AL measurements were obtained using optical biometry (IOL Master 700, Zeiss, Germany) and A-scan biometry (VuMAX, Sonomed, USA). The primary outcome was the mean absolute prediction error (MAE) between postoperative AL and preoperative estimates generated by five methods, including two novel algorithms.
The study included 56 patients (56 eyes). The lowest MAE was achieved using the simple algorithm (0.31 ± 0.55 mm), followed by the AL of the fellow eye measured via IOL Master (0.34 ± 0.60 mm), and the advanced algorithm (0.36 ± 0.62 mm). A Kruskal-Wallis H test found no statistically significant difference in MAE across the five methods (P = 0.118). Bland-Altman analysis demonstrated good agreement between preoperative and postoperative AL measurements obtained with the IOL Master.
For patients undergoing phacovitrectomy for macula-off RRD, the simple algorithm provides accurate AL estimation for IOL power calculation. In cases where AL measurement of the affected eye is not feasible using the IOL Master, the fellow eye's AL is a reliable alternative.
评估黄斑脱离性孔源性视网膜脱离（RRD）患者人工晶状体（IOL）屈光度计算中术前眼轴长度（AL）估计的方法。这些方法包括光学生物测量法、A超生物测量法和新型决策算法。
对2018年1月至2023年12月在一家三级医院前瞻性收集的数据进行回顾性分析。术前和术后的AL测量采用光学生物测量法（德国蔡司IOL Master 700）和A超生物测量法（美国索诺美VuMAX）。主要结局是术后AL与由五种方法（包括两种新算法）生成的术前估计值之间的平均绝对预测误差（MAE）。
该研究纳入了56例患者（56只眼）。使用简单算法获得的MAE最低（0.31±0.55mm），其次是通过IOL Master测量的对侧眼的AL（0.34±0.60mm），以及先进算法（0.36±0.62mm）。Kruskal-Wallis H检验发现，五种方法的MAE无统计学显著差异（P = 0.118）。Bland-Altman分析表明，IOL Master获得的术前和术后AL测量值之间具有良好的一致性。
对于因黄斑脱离性RRD而接受晶状体玻璃体切除术的患者，简单算法可为IOL屈光度计算提供准确的AL估计。在使用IOL Master无法测量患眼AL的情况下，对侧眼的AL是可靠的替代方法。
