目的 :比较裂隙扫描角膜地形图 /角膜测厚系统 (OrbscanCornealTopographySystem ,Orbscan)与EyeSye角膜地形图、自动式角膜曲率计及手动式角膜曲率计测量角膜曲率的差异。方法 :对 6 4人 12 8只眼分别进行Orbscan、EyeSys、自动式和手动式角膜曲率计角膜曲率测量。结果 :Orbscan、EyeSys、自动式及手动式角膜曲率计角膜曲率测量值分别为 :(42 80±1 12 )D ,(43 2 0± 1 2 0 )D ,(43 5 2± 1 15 )D ,(43 6 8± 1 0 6 )D。Orbscan角膜曲率测量值较手动式角膜曲率计测量值偏低0 88D(P <0 0 5 ) ;Orbscan角膜曲率测量值较EyeSys测量值略偏低 0 40D(0 .0 4

0 1)。结论 :不同角膜曲率测量仪的测量结果有不同程度的差异。Orbscan能准确有效地测量角膜前后表面曲率、角膜隆起度和角膜厚度 ,临床中应用价值大 ,但其角膜曲率测量值较手动式角膜曲率计测量值偏低 OBJECTIVE: To compare corneal curvature differences between Orbscan Corneal Topography System (Orbscan) and EyeSye corneal topography, automatic keratometer and manual keratometer. Methods: Orbscan, EyeSys, automatic and manual corneal curvature measurements were performed on 64 eyes of 12 8 eyes. Results: The measurements of corneal curvature of Orbscan, EyeSys and automatic and manual keratometer were (42 80 ± 1 12) D, (43 20 ± 1 20) D, (43 5 2 ± 1 15) D , (43 6 8 ± 1 0 6) D. Orbscan corneal curvature measurements were lower than the manual keratometer measurements 0 88D (P <0 05); Orbscan corneal curvature measurements slightly lower than the EyeSys measurements 0 40D (0. 0 4

0 1). Conclusion: The results of different corneal curvature measuring instrument have different degrees of difference. Orbscan can accurately and effectively measure the curvature of the cornea before and after the surface, corneal elevation and corneal thickness, clinical value, but the measurement of corneal curvature than manual keratometer measurement is low