Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Department of Plastic and Reconstructive Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Dongcheng District, Beijing, 100730, China.
Aesthetic Plast Surg. 2024 Apr;48(7):1276-1287. doi: 10.1007/s00266-023-03671-x. Epub 2023 Oct 4.
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.
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.
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.
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.
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三维（3D）体视摄影已广泛应用于医学和美学目的的人体测量学。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 人体测量协议并验证其可靠性。
招募了 58 名参与者（116 只眼），平均年龄为 39.14±11.25 岁。为每位受试者拍摄了两组 VECTRA 3D 图像，每组图像由两位评估者分别测量两次。在下眼睑区域识别了 27 个标志点，然后评估了 19 个线性、4 个曲线、7 个角度和 2 个面积测量指标的组内、组间和组内方法的可靠性。
基于 3D 成像的下眼睑人体测量学具有高度可靠性。两次组内测量的平均绝对差值分别为 0.22 和 0.08 个单位，技术误差测量值分别为 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分别为 1.53%和 0.64%，组内相关系数分别为 0.99 和 0.99。组间测量的结果分别为 0.53、0.59 个单位，2.94%、3.41%和 0.96，组内方法测量的结果分别为 0.71、0.77 个单位，4.12%、4.05%和 0.95 个单位。
3D 体视摄影在下眼睑人体测量学中具有可靠性。标准化方案可进一步应用于下眼睑衰老评估、手术相关评估和眼周年轻化计划等诸多用途。
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