操作者因素对Lenstar测量眼轴长度可重复性的影响

目的：研究操作者因素对Lenstar测量眼轴长度（AL）可重复性的影响。方法：共纳入60名受试者（60只左眼），每位受试者进行2次检查，由操作者I和操作者II完成，每次检查进行至少3次连续测量。计算出所有受试者2次检查的标准差（SD）和变异系数（CV），用来评价操作者I和操作者II测量AL的可重复性；计算出操作者I和操作者II间的AL差值及其95%置信区间（95%CI）来评价2位操作者间的可重复性。结果：操作者I和操作者II测量的AL值为（24.05±0.02）mm和（24.05±0.02）mm，CV为0.07%和0.06%。操作者I和操作者II间AL差值为（0.00±0.03）mm。操作者I和操作者II间AL差值的95%CI为0.00±0.06。结论：不同操作者带来的差异并不影响Lenstar测量AL的可重复性。

The influence of operators for the repeatability and reproducibility of axial length measured by Lenstar

Objective: To explore the influence of different operators to the repeatability and reproducibility of Lenstar in axial length measurements. Methods: Sixty left eyes of 60 participants were enrolled. Each participant was performed two measurements which was finished by operator I and operator II, each measurement including at least three continue measure. The SD (standar deviation) and CV (coefficient of variation) of all the participants was calculated to evaluate the reproducibility of operator I and operator II. The difference between operator I and operator II in AL measurement and it’s 95%CI (confidence interval) was calculated to evaluate the reproducibility between operator I and operator II. Results: The Mean±SD of operator I and operator II were (24.05±0.02) mm and (24.05±0.02) mm. The CV of operator I and operator II were 0.07% and 0.06%. The Mean±SD of the difference of AL between operator I and operator II was (0.00±0.03) mm. The 95%CI of the difference of AL between operator I and operator II was 0.00±0.06. Conclusion: The factor of operators don’t affect the repeatability and reproducibility of Lenstar.