Abulafia Adi, Barrett Graham D, Kleinmann Guy, Ofir Shay, Levy Adi, Marcovich Arie L, Michaeli Adi, Koch Douglas D, Wang Li, Assia Ehud I
From the Ein-Tal Eye Center (Abulafia, Ofir, Kleinmann, Levy, Marcovich, Michaeli, Assia), Tel Aviv Medical Center (Michaeli), and Tel-Aviv University (Abulafia, Ofir, Michaeli, Assia), Tel Aviv, the Meir Medical Center (Ofir, Assia), Kfar-Saba, and the Kaplan Medical Center (Kleinmann, Marcovich), Rehovot, Israel; the Sir Charles Gairdner Hospital (Abulafia, Barrett), Nedlands, Australia; Cullen Eye Institute (Koch, Wang), Baylor College of Medicine, Houston, Texas, USA.
From the Ein-Tal Eye Center (Abulafia, Ofir, Kleinmann, Levy, Marcovich, Michaeli, Assia), Tel Aviv Medical Center (Michaeli), and Tel-Aviv University (Abulafia, Ofir, Michaeli, Assia), Tel Aviv, the Meir Medical Center (Ofir, Assia), Kfar-Saba, and the Kaplan Medical Center (Kleinmann, Marcovich), Rehovot, Israel; the Sir Charles Gairdner Hospital (Abulafia, Barrett), Nedlands, Australia; Cullen Eye Institute (Koch, Wang), Baylor College of Medicine, Houston, Texas, USA.
J Cataract Refract Surg. 2015 May;41(5):936-44. doi: 10.1016/j.jcrs.2014.08.036. Epub 2015 Apr 30.
To evaluate and compare the accuracy of different methods to measure and predict postoperative astigmatism with toric intraocular lens (IOL) implantation.
Ein-Tal Ophthalmology Center, Tel-Aviv, Israel.
Retrospective case series.
Postoperative corneal astigmatism was measured with 3 devices (IOLMaster 500; optical low-coherence reflectometry [OLCR]-based Lenstar LS 900; Atlas topographer) and compared with the manifest astigmatic refractive outcome in patients with toric IOLs. The error in the predicted residual astigmatism was calculated by vector analysis according to the measurement and calculation method used to predict the required toric IOL cylinder power.
The centroid errors in predicted residual astigmatism were against the rule with the Alcon and Holladay toric calculators (0.53 to 0.56 diopter [D]), were lower with the Baylor nomogram (0.21 to 0.26 D), and were lowest for the Barrett toric calculator (0.01 to 0.16 D) (P <.001). The Barrett toric calculator had the lowest median absolute error in predicted residual astigmatism (0.35 to 0.54 D, all devices) compared with the Alcon and Holladay toric calculators with or without the Baylor nomogram (P <.021). The Barrett toric calculator and the OLCR device achieved the most accurate results; 75.0% and 97.1% of eyes were within ±0.50 D and ±0.75 D of the predicted residual astigmatism, respectively.
Prediction of astigmatic outcomes with toric IOLs can be improved with appropriate measuring devices and methods to establish the required toric IOL power.
评估并比较不同方法测量和预测植入散光型人工晶状体（IOL）后术后散光的准确性。
以色列特拉维夫的艾因 - 塔尔眼科中心。
回顾性病例系列。
使用3种设备（IOLMaster 500；基于光学低相干反射ometry [OLCR]的Lenstar LS 900；Atlas地形图仪）测量术后角膜散光，并与植入散光型IOL患者的明显散光屈光结果进行比较。根据用于预测所需散光型IOL柱镜度数的测量和计算方法，通过矢量分析计算预测残余散光的误差。
使用爱尔康和霍拉迪散光型计算器预测残余散光的质心误差为逆规（0.53至0.56屈光度[D]），使用贝勒列线图时误差较低（0.21至0.26 D），而巴雷特散光型计算器的误差最低（0.01至0.16 D）（P <.001）。与使用或不使用贝勒列线图的爱尔康和霍拉迪散光型计算器相比，巴雷特散光型计算器预测残余散光的中位绝对误差最低（所有设备为0.35至0.54 D）（P <.021）。巴雷特散光型计算器和OLCR设备获得了最准确的结果；分别有75.0%和97.1%的眼睛预测残余散光在±0.50 D和±0.75 D范围内。
使用合适的测量设备和方法来确定所需的散光型IOL度数，可以改善散光型IOL散光结果的预测。
