| 摘要: |
| 目的采用Pentacam系统4种模式测量近视成人角膜曲率，评估其一致性，为临床使用提供参考。方法选取近视志愿受试者64人（64眼），应用Pentacam系统4种模式（分别是3D25、3D50、CF50、CF100）测量角膜3mm直径范围水平中央曲率K1、角膜3mm直径范围垂直中央曲率K2。4种模式测量的K1、K2比较采用重复测量方差分析，采用Bonferroni法两两比较模式间的测量差异，测量结果的一致性研究采用Bland-Altman分析。结果Pentacam系统4种模式测量的受试者K1分别为（42.86±1.49）、（42.86±1.49）、（42.88±1.50）、（42.86±1.49）D，K2分别为（44.00±1.74）、（43.99±1.74）、（43.99±1.76）、（43.99±1.73）D，4种模式测量的K1、K2比较均无统计学差异（均P＞0.05），两两比较亦均无统计学差异（均P＞0.05）。4种模式测量的K1、K2具有很好的一致性。结论Pentacam系统4种模式测量近视成人角膜曲率具有良好的一致性，在测量角膜中央曲率时可以替换使用。 |
| 关键词: Pentacam 角膜地形图 一致性 测量模式 |
| DOI： |
| 分类号: |
| 基金项目:温州市科技计划项目 |
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| Consistency evaluation of 4 different scan modes by Pentacam system for corneal curvature measurement in myopic eyes China |
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CHEN Siping, CHEN Ruru, HUANG Jinhai, CHEN Yan, DENG Jun
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the Eye Hospital of Wenzhou Medical University at Hangzhou
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| Abstract: |
| Objective To evaluate the consistency of 4 different scan modes by Pentacam system for corneal curvature
measurement in myopic eyes. Methods Central corneal curvature [horizontal (K1) and vertical (K2)] of 64 eyes were measured by Pentacam in 4 different scan modes (3D25, 3D50, CF50 and CF100)．The measurements of 4 modes were compared with repeated-measure analysis of variance and Bonferroni multiple comparison correction．Bland-Altman analysis was used to evaluate the consistency of 4 modes. Results The mean K1 obtained by 4 modes was (42.86±1.49), (42.86±1.49), (42.88± 1.50) and (42.86±1.49)D, respectively．And the mean K2 was (44.00±1.74), (43.99±1.74), (43.99±1.76) and (43.99±1.73)D,
respectively．There were no significant differences among the results of these 4 modes in K1 and K2 (both P ＞0.05)．The Bland-Altman plot analysis showed that the 4 modes had comparable results for K1 and K2．For the maximum absolute values
of 95％ limits of agreement (CI) were 0.37 and 0.41D, respectively. Conclusion The 4 scan modes of Pentacam system demon- strate high consistency for K1 and K2 measurement in myopic eyes, indicating that 4 scan modes can be used alternatively for the measurements of central corneal curvature. |
| Key words: Pentacam Corneal curvature Agreement Scan modes |
