State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China.
Department of Ophthalmology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.
Int Ophthalmol. 2020 Jul;40(7):1849-1856. doi: 10.1007/s10792-020-01355-y. Epub 2020 Apr 15.
To evaluate the accuracy of intraocular lens (IOL) power calculation in relation to optical biometry devices and refraction types.
Patients undergoing cataract phacoemulsification and insertion of the MX60 IOL were enrolled. Optical biometric measurements were performed with both IOLMaster 700 and Lenstar 900. Biometry measurements were compared between devices. A subsample of 133 eyes (81.1%) had examination for both autorefraction and subjective refraction postoperatively. The differences between the postoperative refraction and the refraction predicted by eight formulas (Kane, Hill-RBF 2.0, Barrett Universal II, Olsen, Haigis, SRK/T, Holladay 1 and Hoffer Q) were calculated.
Overall, this study comprised 164 eyes of 164 patients. High agreement between the two biometers for axial length, average keratometry readings, anterior chamber depth, lens thickness and central corneal thickness was found (interclass correlation confidents: 0.999, 0.988, 0.965, 0.865 and 0.972, respectively, all P < 0.001). The absolute prediction error calculated with IOLMaster 700 measurements was significantly lower than that calculated with Lenstar 900 measurements for Olsen (P = 0.003), Haigis (P < 0.001) and Hoffer Q (P = 0.028). OPD-Scan III gave slightly more negative readings than subjective refraction (mean difference - 0.107 ± 0.553, P = 0.003 for spherical equivalent). However, no significant difference in absolute prediction error was found between the two refraction types per each formula.
IOLMaster 700 and Lenstar 900 showed good agreement in biometric measurements with a trend toward better refractive outcome using IOLMaster 700. The accuracy of IOL calculation assessed with OPD autorefraction was equivalent to that assessed with subjective refraction.
评估与光学生物测量仪和屈光度类型相关的人工晶状体（IOL）屈光力计算的准确性。
招募接受白内障超声乳化吸除术并植入 MX60 IOL 的患者。使用 IOLMaster 700 和 Lenstar 900 进行光学生物测量。比较两种设备的生物测量值。对 133 只眼（81.1%）的亚样本进行了术后自动折射和主观折射检查。计算术后折射与八种公式（Kane、Hill-RBF 2.0、Barrett Universal II、Olsen、Haigis、SRK/T、Holladay 1 和 Hoffer Q）预测的折射之间的差异。
本研究共纳入 164 例 164 只眼。两种生物测量仪在眼轴长度、平均角膜曲率读数、前房深度、晶状体厚度和中央角膜厚度方面具有高度一致性（组内相关置信度：0.999、0.988、0.965、0.865 和 0.972，均 P<0.001）。使用 IOLMaster 700 测量值计算的绝对预测误差明显低于使用 Lenstar 900 测量值计算的绝对预测误差，Olsen（P=0.003）、Haigis（P<0.001）和 Hoffer Q（P=0.028）。OPD-Scan III 给出的等效球镜读数略低于主观折射读数（平均差值-0.107±0.553，P=0.003）。然而，每种公式的两种折射类型之间的绝对预测误差没有发现显著差异。
IOLMaster 700 和 Lenstar 900 在生物测量方面具有良好的一致性，使用 IOLMaster 700 具有更好的屈光效果趋势。使用 OPD 自动折射评估的 IOL 计算准确性与使用主观折射评估的准确性相当。
