摘要目的:比较IOLMaster 700与Pentacam AXL测量白内障患者眼生物学参数的一致性。方法:采用横断面研究方法，纳入2018年1月2日—11日于北京同仁医院眼科中心就诊的单纯白内障患者76例146眼，其中男36例69眼，女40例77眼；受检者年龄35～88岁，平均(64.52±11.36)岁。所有患者均分别采用IOLMaster 700及Pentacam AXL测量眼轴长度(AL)、平均角膜曲率(Km)、前房深度(ACD)、中央角膜厚度(CCT)和角膜直径(WTW)。比较2种检查仪器各测量值的差异，评估两种测量结果的相关性和一致性。结果:IOLMaster 700与Pentacam AXL测量的AL分别为(24.03±1.72)mm和(23.98±1.73)mm，Km分别为(44.04±1.71)D和(43.88±1.72)D，ACD分别为(3.24±0.47)mm和(3.28±0.47)mm，WTW分别为(11.82±0.51)mm和(11.49±0.49)mm，IOLMaster 700测得的AL、Km、WTW值较大，ACD值较小，差异均有统计学意义( t＝18.06、8.94、23.83、-15.36，均 P<0.01)，IOLMaster 700与Pentacam AXL测量的CCT分别为(534.18±30.12)μm和(533.42±28.71)μm，差异无统计学意义( t＝1.04， P＝0.30)。Pearson线性相关分析结果显示，2种仪器测量的AL、Km、ACD、CCT及WTW值均呈明显正相关( r＝0.999、0.992、0.998、0.956、0.942，均 P<0.01)。Bland-Altman分析结果显示，2种仪器测量的AL、Km、ACD、CCT及WTW值的95%一致性界限分别为-0.02～0.11 mm、-0.27～0.59 D、-0.10～0.02 mm、-16.5～18.1 μm及0.00～0.67 mm。 结论:IOLMaster 700与Pentacam AXL测量AL、ACD、CCT具有较好的一致性及较窄的95%一致性界限，临床上可以互换使用。两种仪器测量WTW和Km的95%一致性界限超出临床可接受范围，均不建议互换使用。

abstractsObjective:To compare the agreement of biometric parameters measured by a new swept-source optical coherence tomography IOLMaster 700 and a new Scheimpflug imaging combined with partial coherence interferometry biometer Pentacam AXL in cataractous eyes.Methods:A cross-sectional study was performed.A total of 146 eyes from 76 cataract patients were enrolled in Beijing Tongren Eye Center from 2 to 11 in January 2018, including 69 eyes in 36 males and 77 eyes in 40 females, the age ranged from 35 to 88 years, the mean age was (64.52±11.36) years.Axial length (AL), mean keratometry (Km), anterior chamber depth (ACD), central corneal thickness (CCT) and white-to-white (WTW) were measured with IOLMaster 700 and Pentacam AXL, respectively.The differences and correlations of the biometry parameters between the two devices were assessed.Bland-Altman method was used to evaluate the agreement of these parameters between the two devices and the 95% limits of agreement was calculated.This study adhered to the tenets of the Declaration of Helsinki and was approved by an Ethics Committee of Beijing Tongren Hospital (TRECKY2018-049).Results:The mean values of the AL measured by IOLMaster 700 and Pentacam AXL were (24.03±1.72)mm and (23.98±1.73)mm, Km were (44.04±1.71)D and (43.88±1.72)D, ACD were (3.24±0.47)mm and (3.28±0.47)mm, WTW were (11.82±0.51)mm and (11.49±0.49)mm, respectively.Compared with the values in Pentacam AXL, the AL, Km and WTW were larger while ACD was smaller in IOLMaster 700 with significant differences ( t=18.06, 8.94, 23.83, -15.36, all at P<0.01). The mean CCT values from the IOLMaster 700 and Pentacam AXL were (534.18±30.12)μm and (533.42±28.71)μm, respectively, with no significant difference ( t=1.04, P=0.30). The AL, Km, ACD, CCT and WTW from IOLMaster 700 were highly correlated with those from Pentacam AXL ( r=0.999, 0.992, 0.998, 0.956, 0.942; all at P<0.01). The Bland Altman analysis showed that the 95% limits of agreement of AL, Km, ACD, CCT and WTW were-0.02-0.11 mm, -0.27-0.59 D, -0.10-0.02 mm, -16.5-18.1 μm and 0.00-0.67 mm. Conclusions:IOLMaster 700 and Pentacam AXL have good agreements and narrow 95% limits of agreement in the measurements of AL, ACD, CCT, which can be clinically interchangeable.The 95% limits of agreement of WTW and Km are out of the clinically acceptable range, so the WTW and Km measured by the two devices are not interchangeable.