背景:三维(3D)立体摄影测量已广泛用于医学和美学目的的人体测量中。然而,尚无研究评估其通过3D成像测量下眼睑的可靠性.本研究旨在建立下眼睑区域的标准化3D人体测量方案,并验证其可靠性。
方法:招募了58名参与者(116只眼),平均年龄为39.14±11.25岁。为每个受试者拍摄两组VECTRA3D图像,每组图像分别由两名评估者测量两次。在下眼睑区域发现了27个地标,然后是19个线性的,4曲线,评估了7个角度指标和2个区域指标,评估者和内部方法的可靠性。
结果:在基于3D成像的下眼睑人体测量中发现了高可靠性。2个测量内的平均绝对差为0.22和0.08个单位,技术误差测量为0.31和0.15个单位,测量的相对误差分别为0.90%和0.31%,测量的相对技术误差为1.53%和0.64%,组内相关系数分别为0.99和0.99。评分者间测量的结果为0.53个单位,0.59个单位,2.94%,3.41%和0.96,对于模内测量为0.71个单位,0.77个单位,4.12%,4.05%和0.95个单位,分别。
结论:3D立体摄影测量对下眼睑人体测量是可靠的。标准化协议可以进一步应用于许多目的,例如下眼睑老化评估,手术相关评估和眼周恢复计划。
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BACKGROUND: Three-dimensional (3D) stereophotogrammetry has been widely used in anthropometry for both medical and esthetic purposes. However, no studies have assessed its reliability on measuring the lower eyelid by 3D imaging. This study aimed to establish a standardized 3D anthropometric protocol for lower eyelid region and validate its reliability.
METHODS: Fifty-eight participants (116 eyes) were recruited with mean age of 39.14 ± 11.25 years. Two sets of VECTRA 3D images were taken for each subject, and each set of images was individually measured twice by two raters. Twenty-seven landmarks were identified in the lower eyelid region, and then 19 linear, 4 curvilinear, 7 angular and 2 areal metrics were assessed for intrarater, interrater and intramethod reliability.
RESULTS: High reliability was found in this 3D imaging-based lower eyelid anthropometry. The mean absolute difference within 2 intrarater measurement were 0.22 and 0.08 units, the technical errors measurement were 0.31 and 0.15 units, the relative errors of measurement were 0.90% and 0.31%, the relative technical errors of measurement were 1.53% and 0.64%, and the intra-group correlation coefficient was 0.99 and 0.99. The results for interrater measurement were 0.53 units, 0.59 units, 2.94%, 3.41% and 0.96, and for intramethod measurement were 0.71 units, 0.77 units, 4.12%, 4.05% and 0.95 units, respectively.
CONCLUSIONS: 3D stereophotogrammetry is reliable for lower eyelid anthropometry. The standardized protocol can be further applied for many purposes such as lower eyelid aging evaluation, surgical related assessment and periocular rejuvenation plan.
METHODS: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .