Kim Seonghwan, Son Yengwoo, Hyon Joon Young
Department of Ophthalmology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea.
Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
Korean J Ophthalmol. 2025 Feb;39(1):64-70. doi: 10.3341/kjo.2024.0117. Epub 2025 Jan 9.
To evaluate the accuracy of toric intraocular lens (IOL) axis prediction between two preoperative measurement devices: the optical biometry (IOLMaster 500 or IOLMaster 700) and the dual Scheimpflug topography (Galilei G4).
Medical records of 64 eyes from 44 patients who underwent phacoemulsification and posterior chamber toric IOL (Zeiss AT TORBI 709M) implantation between July 2017 and January 2022 were reviewed. All patients underwent preoperative evaluation by optical biometry (IOLMaster 500 or IOLMaster 700) and Galilei G4. The gold-standard axis that minimizes astigmatism was calculated by the online Toric Results Analyzer postoperatively and compared to the preoperative toric IOL axis calculated by the Z CALC Online IOL Calculator using parameters from either IOLMaster or Galilei G4. The axis error (AE) and the absolute AE (AAE) between the gold-standard axis and the preoperative calculated axis were analyzed to assess the accuracy of each device.
The mean flat keratometry and steep keratometry were 42.99 diopters (D) and 45.61 D, respectively, in IOLMaster, and 43.04 D and 45.51 D, respectively, in Galilei G4, which did not show any significant difference. The mean keratometric astigmatism was 2.62 D in IOLMaster and 2.46 D in Galilei G4, which also did not show any statistical difference. The keratometric astigmatism axis did not show any significant difference between IOLMaster and Galilei G4. The mean AE and AAE were 0.19° and 6.84°, respectively, by IOLMaster, and -0.80° and 7.98°, respectively, by Galilei G4. The AE and AAE by IOLMaster did not show any significant difference compared to those of Galilei G4 (p = 0.583, and p = 0.346, respectively).
This study suggests that the Galilei G4 demonstrated a similar level of accuracy to the IOLMaster in predicting the toric IOL axis, based on the gold-standard axis provided by the Toric Results Analyzer.
评估两种术前测量设备在预测散光人工晶状体（IOL）轴位方面的准确性，这两种设备分别是光学生物测量仪（IOLMaster 500或IOLMaster 700）和双Scheimpflug角膜地形图仪（Galilei G4）。
回顾了2017年7月至2022年1月期间44例患者64只眼行白内障超声乳化吸除术联合后房型散光IOL（蔡司AT TORBI 709M）植入术的病历。所有患者均接受了光学生物测量仪（IOLMaster 500或IOLMaster 700）和Galilei G4的术前评估。术后通过在线散光结果分析仪计算出使散光最小化的金标准轴位，并与使用IOLMaster或Galilei G4参数通过Z CALC在线IOL计算器计算的术前散光IOL轴位进行比较。分析金标准轴位与术前计算轴位之间的轴位误差（AE）和绝对AE（AAE），以评估每种设备的准确性。
IOLMaster测量的平均平坦角膜曲率和陡峭角膜曲率分别为42.99屈光度（D）和45.61 D，Galilei G4测量的分别为43.04 D和45.51 D，两者无显著差异。IOLMaster测量的平均角膜散光为2.62 D，Galilei G4测量的为2.46 D，也无统计学差异。IOLMaster和Galilei G4之间的角膜散光轴位无显著差异。IOLMaster测量的平均AE和AAE分别为0.19°和6.84°，Galilei G4测量的分别为-0.80°和7.98°。IOLMaster测量的AE和AAE与Galilei G4相比无显著差异（p分别为0.583和0.346）。
本研究表明，基于散光结果分析仪提供的金标准轴位，Galilei G4在预测散光IOL轴位方面与IOLMaster具有相似的准确性。
