剑桥低对比度光栅的可靠性

Reliability of the Cambridge Low Contrast Gratings.

作者信息

Jones H S, Moseley M J, Thompson J R

机构信息

Department of Ophthalmology, University of Birmingham, UK.

出版信息

Ophthalmic Physiol Opt. 1994 Jul;14(3):287-9. doi: 10.1111/j.1475-1313.1994.tb00009.x.

DOI:10.1111/j.1475-1313.1994.tb00009.x

PMID:7970743

Abstract

We examined the reliability of the Cambridge Low Contrast Gratings over four sessions at intervals of 1 hour, 1 day and 1 week. The 95% ranges of difference scores were found to be +/- 10.3 and +/- 10.5 test units for left and right eyes respectively. These reliability estimates span almost one-quarter of the test's dynamic range and one-third of the subjects' performance range. Practice effects were not found to be significant. Though previous reports have emphasized the usefulness of the Cambridge Gratings in screening for eye disease, caution is advised when interpreting changes that occur over time.

摘要

我们在四个时间段对剑桥低对比度光栅的可靠性进行了检测，时间间隔分别为1小时、1天和1周。结果发现，左右眼差异分数的95%范围分别为±10.3和±10.5个测试单位。这些可靠性估计值几乎涵盖了测试动态范围的四分之一和受试者表现范围的三分之一。未发现练习效应显著。尽管先前的报告强调了剑桥光栅在眼部疾病筛查中的有用性，但在解释随时间发生的变化时仍建议谨慎。