Biometric measurements in highly myopic eyes
Biometric measurements in highly myopic eyes
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DOI：
10.1016/j.jcrs.2012.08.064
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发表时间：
2013-02-01
影响因子：
2.8
通讯作者：
He, Mingguang
中科院分区：
文献类型：
--
作者：
Shen, Peiyang;Zheng, Yingfeng;He, Mingguang
目得：评估光学生物测量的重复性和准确性（Lenstar LS 900光学低相干反射仪[OLCR]和IOLMaster部分相干干涉仪[PCI]）和压平超声生物测量法在高度近视眼中的应用。单位：中国广州中山眼科中心预防眼科科。设计：诊断技术的比较评价。方法：在等效球镜（SE）为-6.00屈光度（D）或更高且眼轴长度（AL）大于25.0 mm的高度近视受试者中进行生物计量测量。将OLCR与PCI及压平A超所获得的结果进行比较。右眼进行了分析。重复性评价采用变异系数（Coy）和一致性，采用Bland-Altman分析。结果：平均SE为-11.20 D +/- 4.65（SD）。使用OLCR、PCI和压平超声重复AL测量的CoV分别为0.06%、0.07%和0.20%。OLCR和PCI之间AL的一致性限度（LoA）为0.11 mm，OLCR和压平超声之间为1.01 mm，PCI和超声之间为1.03 mm。ACD值分别为0.29 mm、0.53 mm和0.51 mm。这些重复性和一致性结果在患有极度近视（AL >= 27.0 mm）或后部葡萄肿的眼睛中具有可比性。OLCR和PCI之间的平均角膜曲率半径相似（7.66 +/- 0.24 mm vs 7.64 +/- 0.25 mm），LoA为0.12 mm。结论：光学生物测量提供了更可重复和更精确的测量生物特征参数，包括AL和ACD，比压平超声生物测量高度近视眼。
PURPOSE: To assess the repeatability and accuracy of optical biometry (Lenstar LS900 optical low-coherence reflectometry [OLCR] and IOLMaster partial coherence interferometry [PCI]) and applanation ultrasound biometry in highly myopic eyes.SETTING: Division of Preventive Ophthalmology, Zhongshan Ophthalmic Center, Guangzhou, China.DESIGN: Comparative evaluation of diagnostic technology.METHODS: Biometric measurements were taken in highly myopic subjects with a spherical equivalent (SE) of -6.00 diopters (D) or higher and an axial length (AL) longer than 25.0 mm. Measurements of AL and anterior chamber depth (ACD) obtained by OLCR were compared with those obtained by PCI and applanation A-scan ultrasound. Right eyes were analyzed. Repeatability was evaluated using the coefficient of variation (Coy) and agreement, using Bland-Altman analyses.RESULTS: The mean SE was -11.20 D +/- 4.65 (SD). The CoVs for repeated AL measurements using OLCR, PCI, and applanation ultrasound were 0.06%, 0.07%, and 0.20%, respectively. The limits of agreement (LoA) for AL were 0.11 mm between OLCR and PCI, 1.01 mm between OLCR and applanation ultrasound, and 1.03 mm between PCI and ultrasound. The ACD values were 0.29 mm, 0.53 mm, and 0.51 mm, respectively. These repeatability and agreement results were comparable in eyes with extreme myopia (AL >= 27.0 mm) or posterior staphyloma. The mean radius of corneal curvature was similar between OLCR and PCI (7.66 +/- 0.24 mm versus 7.64 +/- 0.25 mm), with an LoA of 0.12 mm.CONCLUSION: Optical biometry provided more repeatable and precise measurements of biometric parameters, including AL and ACD, than applanation ultrasound biometry in highly myopic eyes.