对焦方式对检定验光仪角膜曲率的影响

Effect of Focusing Methods on Corneal Curvature of Refractometer

客观式验光仪(以下简称"验光仪")作为常见的光学检查仪器被广泛地运用于眼科医院、眼镜店及各综合性医院眼科。当前市场上的验光仪一般具有检查人眼屈光不正程度的功能^([1]),部分验光仪还能测试人眼角膜曲率。文中探讨在验光仪角膜曲率示值误差的计量检定过程中,利用仪器自动跟踪和摄影功能、人眼手动对焦以及仪器对焦指示器辅助手动对焦三种方式进行角膜曲率半径示值误差计量检定时,不同对焦方式对检定结果的影响。

Objective refractometer(hereinafter referred to as refractometer)is widely used in ophthalmic hospitals,spectacle shops and general hospitals as a common optical examination instrument.It can also be used to test the degree of refractive error in some people.This paper discusses the influence of different focusing methods on the results of the measurement and verification of corneal curvature indication error in the process of metrological verification of corneal curvature indication error of refractometer by using automatic tracking and photographing function of the instrument,manual focusing of human eyes and manual focusing assisted by instrument focusing indicator.