Sorkin Nir, Zadok Tal, Barrett Graham D, Chasid Otzem, Abulafia Adi
From the Department of Ophthalmology, Tel Aviv Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel (Sorkin); Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel (Zadok, Chasid); Sir Charles Gairdner Hospital, University of Western Australia, Perth, Western Australia, Australia (Barrett); Lions Eye Institute, affiliated to the University of Western Australia, Perth, Western Australia, Australia (Barrett); Department of Ophthalmology, Ziv Medical Center, Safed, Israel (Chasid); Department of Ophthalmology, Shaare Zedek Medical Center and the Hebrew University-Hadassah Medical School, Jerusalem, Israel (Abulafia).
J Cataract Refract Surg. 2023 May 1;49(5):460-466. doi: 10.1097/j.jcrs.0000000000001146.
To evaluate the agreement in biometry measurements and intraocular lens (IOL) power prediction between the Eyestar 900 and the IOLMaster 700.
Institutional.
Retrospective comparative study.
Patients were evaluated before cataract surgery using both devices on the same visit. Axial length, anterior and posterior keratometry, anterior chamber depth, corneal diameter (CD), central corneal thickness, and lens thickness were recorded by both devices. The agreement in measurements and in IOL power calculations was evaluated using the Barrett Universal II (BU-II) formula with either predicted or measured posterior keratometry.
In total, 402 eyes of 402 consecutive patients were included. The mean age was 72.0 ± 9.2 years. Clinically, mean differences in measured variables were small, albeit slightly larger for posterior flat and steep keratometry (0.43 diopters [D] and 0.42 D, respectively). The measurement correlation and agreement between the devices were good for all variables with slightly lower agreement in CD measurements. Consistent bias was seen in measurements of posterior flat and steep keratometry. Good agreement was also found in anterior and posterior astigmatism measurements. Good IOL power calculation agreement was found using either predicted posterior keratometry (95% limits of agreement [LoA] of -0.40 to +0.30 D) or measured posterior keratometry (95% LoA of -0.45 to +0.40 D). The agreement was within ±0.5 D in 394 eyes (98.0%) using predicted posterior keratometry and in 386 eyes (96.0%) using measured posterior keratometry.
The Eyestar 900 and the IOLMaster 700 show strong agreement in biometry measurements and IOL power prediction by the BU-II formula using either standard or total corneal keratometry and can be used interchangeably.
评估Eyestar 900与IOLMaster 700在生物测量及人工晶状体（IOL）屈光度预测方面的一致性。
机构研究。
回顾性比较研究。
在同一次就诊时使用这两种设备对白内障手术患者进行术前评估。两种设备均记录眼轴长度、前后角膜曲率、前房深度、角膜直径（CD）、中央角膜厚度及晶状体厚度。使用Barrett通用II（BU-II）公式，根据预测或测量的后表面角膜曲率评估测量结果及IOL屈光度计算的一致性。
共纳入402例连续患者的402只眼。平均年龄为72.0±9.2岁。临床上，测量变量的平均差异较小，后表面平坦和陡峭角膜曲率的差异略大（分别为0.43屈光度[D]和0.42 D）。两种设备在所有变量的测量相关性和一致性良好，CD测量的一致性略低。在后表面平坦和陡峭角膜曲率测量中观察到一致的偏差。在前、后散光测量中也发现了良好的一致性。使用预测的后表面角膜曲率（一致性界限[LoA]为-0.40至+0.30 D）或测量的后表面角膜曲率（95% LoA为-0.4
