准分子原位角膜磨镶术后自动验光及眼轴长度测量的可重复性

Repeatability of autorefraction and axial length measurements after laser in situ keratomileusis.

作者信息

Bailey Melissa D, Twa Michael D, Mitchell G Lynn, Dhaliwal Deepinder K, Jones Lisa A, McMahon Timothy T

机构信息

The Ohio State University College of Optometry, Columbus, Ohio 43210, USA.

出版信息

J Cataract Refract Surg. 2005 May;31(5):1025-34. doi: 10.1016/j.jcrs.2004.12.040.

DOI:10.1016/j.jcrs.2004.12.040

PMID:15975474

Abstract

PURPOSE

To assess the repeatability and agreement of refractive error measurements and the repeatability of axial length (AL) measurements in patients after laser in situ keratomileusis (LASIK).

SETTING

The Ohio State University College of Optometry, Columbus, Ohio, USA.

METHODS

Subjective refraction, autorefraction measurements with the Grand Seiko and Humphrey autorefractors, and AL measurements with the IOLMaster were completed for 40 previously myopic LASIK patients under noncycloplegic and cycloplegic conditions on 2 separate occasions.

RESULTS

The mean difference between visits for axial length measurements was 0.008 mm +/- 0.04 (SD). The between visits repeatability for all refractive error measurements were <0.75 diopter (D). The mean difference between the subjective refraction and the Humphrey autorefractor for spherical equivalent was statistically significant under noncycloplegic conditions (-0.90 D, P<.0001) and cycloplegic conditions (-2.05 D, P<.0001). The mean difference between subjective refraction and Grand Seiko autorefraction measurements was not significant under noncycloplegic conditions (+0.05 D, 95% limits of agreement [LoA]=-0.99, 1.09; P=.52) conditions but was statistically significant, but not clinically relevant, under cycloplegic conditions (+0.17 D, 95% LoA=-0.73, 1.07; P=.03).

CONCLUSIONS

Refractive error measurements after LASIK using the Grand Seiko autorefractor are reliable and agree well with subjective refraction measurements.

摘要

目的

评估准分子原位角膜磨镶术（LASIK）术后患者屈光不正测量的可重复性和一致性以及眼轴长度（AL）测量的可重复性。

设置

美国俄亥俄州哥伦布市俄亥俄州立大学视光学院。

方法

对40例既往近视的LASIK患者在非睫状肌麻痹和睫状肌麻痹状态下分2次进行主观验光、使用Grand Seiko和汉弗莱自动验光仪进行自动验光测量以及使用IOLMaster进行AL测量。

结果

眼轴长度测量的两次检查之间的平均差值为0.008 mm±0.04（标准差）。所有屈光不正测量的两次检查之间的可重复性均<0.75屈光度（D）。在非睫状肌麻痹状态下（-0.90 D，P<0.0001）和睫状肌麻痹状态下（-2.05 D，P<0.0001），主观验光与汉弗莱自动验光仪测量的等效球镜度之间的平均差值具有统计学意义。在非睫状肌麻痹状态下（+0.05 D，95%一致性界限[LoA]=-0.99，1.09；P=0.52），主观验光与Grand Seiko自动验光测量之间的平均差值无统计学意义，但在睫状肌麻痹状态下（+0.17 D，95% LoA=-0.73，1.07；P=0.03）具有统计学意义，但无临床相关性。