Miot Hélio Amante, Pivotto Daniel Rosito, Jorge Edson Nassib, Mazeto Gláucia Maria Ferreira da Silva
Departamento de Dermatologia e Radioterapia, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista Julio de Mesquita Filho, Botucatu, SP, Brasil.
Arq Bras Oftalmol. 2008 Sep-Oct;71(5):679-83. doi: 10.1590/s0004-27492008000500013.
To evaluate reproducibility and precision of ocular measurements by digital photograph analysis, in addition to the transformation of the measures according to the individual iris diameter as an oculometric reference.
Twenty-four eyes have been digitally photographed in a standardized way at two distances. Two researchers have analyzed these printed images using a caliper and these digital forms by ImageJ 1.37. Several external ocular parameters were estimated (mm and as iris diameter) and methods of measurement compared regarding their precision, agreement and correlation.
Caliper and digital analysis of oculometric measures provided significant agreement and correlation, nevertheless the precision of digital measures was higher. The estimates of numeric transformation from oculometric measures according to individual iris diameter resulted in great correlation to caliper measures and high agreement when compared to different distances of taking the photographs.
Facial digital photographs allowed oculometric precise and reproducible estimates, endorsing clinical research usefulness. Using iris diameter as individual oculometric reference disclosed high reproducibility when facial photographs were taken at different distances.
通过数字照片分析评估眼部测量的可重复性和精度，并根据个体虹膜直径作为眼测量参考对测量值进行转换。
以标准化方式在两个距离对24只眼睛进行数字拍照。两名研究人员使用卡尺分析这些打印图像，并通过ImageJ 1.37分析这些数字图像。估计了几个眼部外部参数（毫米和相对于虹膜直径），并比较了测量方法的精度、一致性和相关性。
眼测量的卡尺测量和数字分析具有显著的一致性和相关性，但数字测量的精度更高。根据个体虹膜直径对眼测量值进行数字转换的估计与卡尺测量具有高度相关性，并且与不同拍照距离相比具有高度一致性。
面部数字照片可实现眼测量的精确和可重复估计，支持临床研究的实用性。当在不同距离拍摄面部照片时，使用虹膜直径作为个体眼测量参考显示出高可重复性。
