A new, hand-held keratometer: comparison of theNidek KM-500 auto keratometer with the B&L keratometer and the topcon RK-3000A keratometer

Journal of The British Contact Lens Association Pub Date : 1996-01-01 DOI:10.1016/S0141-7037(96)80032-2

PhD, FBCO, DCLP Marion H. Edwards, BOptom Pauline Cho

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引用次数: 8

Abstract

The Nidek KM-500 is a recently introduced hand-held automatic keratometer. If the accuracy and reliability of thisinstrument are good then it offers a number of benefits to contact lens practitioners and other clinicians. This study investigated the repeatability and reproducibility of readings taken using the hand-held Nidek KM-500, the Topcon RK-3000A and the Bausch & Lomb keratometer. The Nidek KM-500 was found to be reliable when used according to the manufacturer's instructions and the readings equated well with those obtained with the table-mounted Topcon KR-3000A. The repeatability of the Bausch & Lomb keratometer can be improved by taking the mean of three readings. Clinicians should consider conducting a simple repeatability study of the keratometer used in their own practice. The results may help to pinpoint a weakness in technique when using a non-automated instrument, and will establish the criterion for a true change in corneal radius.

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一种新型手持式角膜计:theNidek KM-500自动角膜计与B&L角膜计和topcon RK-3000A角膜计的比较

Nidek KM-500是最近推出的手持式自动角膜度数计。如果该仪器的准确性和可靠性良好，那么它将为隐形眼镜从业人员和其他临床医生提供许多好处。本研究调查了使用手持Nidek KM-500、Topcon RK-3000A和Bausch &随着角膜散光计。根据制造商的说明使用时，发现Nidek KM-500是可靠的，其读数与台式Topcon KR-3000A获得的读数相当。Bausch &通过取三次读数的平均值，Lomb角膜度数仪可以得到改进。临床医生应该考虑在他们自己的实践中对角膜度数仪进行简单的重复性研究。结果可能有助于指出使用非自动化仪器时技术上的弱点，并将建立角膜半径真正变化的标准。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of The British Contact Lens Association

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