Evaluation of an iris color classification system. The Eye Disorders Case-Control Study Group.
Evaluation of an iris color classification system. The Eye Disorders Case-Control Study Group.
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DOI：
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发表时间：
1990-08
影响因子：
4.4
通讯作者：
Johanna M. Seddon;C. Sahagian;Robert J. Glynn;R. Sperduto;E. Gragoudas
中科院分区：
文献类型：
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作者：
Johanna M. Seddon;C. Sahagian;Robert J. Glynn;R. Sperduto;E. Gragoudas
虹膜颜色的标准照片的基础上，开发用于多中心研究的分类系统，进行了说明。虹膜颜色的类别是基于主要颜色（蓝色，灰色，绿色，浅棕色或棕色）和虹膜中存在的棕色或黄色色素的量来区分的。两名经过培训的阅片师对339张虹膜照片进行独立评分;对评分差异进行裁定。观察者间可靠性的测量值为0.76 kappa的精确一致性和0.97加权kappa。虹膜颜色等级的分布表明，该系统在作者的研究人群中达到了适当的细节水平，其中包括来自五个城市临床中心的各种种族背景的患者。这个简单、可靠的虹膜颜色分类系统可用于临床研究。
A system for classification of iris color based on standard photographs, developed for use in a multicenter study, is described. Categories of iris color are distinguished based on predominant color (blue, gray, green, light brown, or brown) and the amount of brown or yellow pigment present in the iris. Two trained readers independently graded 339 iris photographs; discrepancies in grades were adjudicated. Measures of interobserver reliability were 0.76 by kappa for exact agreement and 0.97 for weighted kappa. The distribution of iris color grades demonstrates that the system achieved an appropriate level of detail within the authors' study population, which included patients with various racial backgrounds from five urban clinical centers. This simple, reliable classification system for iris color is offered for use in clinical research.