Videokeratography database of normal human corneas
Videokeratography database of normal human corneas
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DOI：
10.1136/bjo.80.7.610
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发表时间：
1996-07-01
影响因子：
4.1
通讯作者：
Elashoff, J
中科院分区：
文献类型：
--
作者：
Rabinowitz, YS;Yang, HY;Elashoff, J
目的：建立一个描述正常人角膜的视频角膜地形图模式和定量指标的数据库。根据绝对量表设计的分类方案将视频角膜照片分为10类，并使用10个定量指标进行分析，以描述圆锥角膜视频角膜照片的表型特征。视频角膜图形和定量指标之间的相关性进行了研究。此外，数据进行了分析，在年龄，性别和ethnication.Results-For对称videokeratography模式的差异，在绝对规模的分析是类似于以前的研究中做的标准化规模。在不对称类别中，分析结果明显不同。使用绝对尺度和我们的分类方案，更多的变化，正常videokeratography模式可以欣赏。定量指标与影像角膜地形图类型之间有良好的相关性。无论是videokeratography模式，也没有指数显着不同性别，种族群体，或年龄之间使用双向方差analysisofvariance.Conclusions-Pattern分析videokeratographs在绝对规模使用，一个标准的分类方案，可能是更有用的，试图确定角膜是否正常或代表微妙的早期疾病比分析在正常化规模。定量指标可以消除决策过程中的主观性，从而促进视频角膜摄影数据解释的普遍可重复性。
Aim-To form a database of videokeratography patterns and quantitative indices describing normal human corneas using the absolute scale.Methods-Both eyes of 195 normal subjects were examined with a TMS-1 videokeratoscope. Videokeratographs were divided into 10 categories based on a classification scheme devised from the absolute scale and analysed with 10 quantitative indices devised to describe phenotypic features of keratoconus videokeratographs. Correlations were sought between videokeratograph patterns and quantitative indices. Additionally, data were analysed for differences in age, sex, and ethnicity.Results-For symmetric videokeratography patterns, analysis in the absolute scale was similar to a previous study done in the normalised scale. In the asymmetric categories, analyses differed markedly. Using the absolute scale and our classification scheme more variation in normal videokeratography patterns could be appreciated. There was good correlation between quantitative indices and videokeratography patterns. Neither videokeratography patterns nor indices differed significantly between sex, ethnic groups, or age using two way analysis of variance.Conclusions-Pattern analysis of videokeratographs in the absolute scale using, a standard classification scheme, may be more useful in trying to determine whether a cornea is normal or represents subtle early disease than analysis in the normalised scale. Quantitative indices could remove the subjectivity from the decision making process thus facilitating universal reproducibility of videokeratography data interpretation.