Attending, Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China.
Attending, Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany; Center for Integrated Oncology (CIO) Aachen-Bonn-Cologne-Duesseldorf, Cologne, Germany.
J Oral Maxillofac Surg. 2022 Jun;80(6):1033-1039. doi: 10.1016/j.joms.2022.01.022. Epub 2022 Feb 5.
Few studies quantitatively investigated the degree of medial canthal tendon (MCT) laxity using three-dimensional (3D) stereophotography as two-dimensional (2D) imaging systems are still widely used in periocular anthropometry. Hence, in this study, we aimed to compare 2D and 3D technique in assessing MCT laxity and to investigate the correlation between them.
A cross-sectional study was conducted in randomly recruited healthy volunteers with no history of eyelid disease and surgery. Predictor variables were the linear measurements derived from 2D and 3D images, respectively, and the outcome variable was MCT laxity. Covariates including age and sex were also included in our correlation observations. One-side measurements for each image were randomly selected for our study. Bivariate correlation was applied to evaluate the correlation between 2D and 3D measurements. Linear regression was used to investigate the correlation between the predictor and outcome variables.
Ninety-five Caucasian volunteers (50 men and 45 women, 95 eyes) between 22 and 84 years of age (58.5 ± 16.0 years) were included in our study. The 2 sets of measurements for MCT laxity were 3.13 ± 0.75 and 2.62 ± 1.50 mm on 2D images (P = .18) and 2.49 ± 1.58 and 2.58 ± 1.72 mm on 3D images (P = .23). A significant correlation was observed between 3D measurements and MCT laxity (P < .01), while no significant correlation was found between 2D measurements and MCT laxity (P = .64).
Our results revealed that measurements on 3D images could be predictors of MCT laxity and might be applied as a base and a reference for speculating the 3D MCT laxity in further research and clinical evaluation.
尽管二维（2D）成像系统仍广泛用于眶周人体测量学，但很少有研究使用三维（3D）体视摄影定量研究内眦肌腱（MCT）松弛的程度。因此，本研究旨在比较 2D 和 3D 技术评估 MCT 松弛度，并探讨两者之间的相关性。
本研究为横断面研究，纳入无眼睑疾病和手术史的随机招募的健康志愿者。预测变量分别为 2D 和 3D 图像的线性测量值，结果变量为 MCT 松弛度。我们的相关性观察还包括年龄和性别等协变量。为我们的研究随机选择了每个图像的单侧测量值。应用双变量相关性评估 2D 和 3D 测量值之间的相关性。线性回归用于研究预测变量与结果变量之间的相关性。
本研究纳入了 95 名高加索志愿者（50 名男性和 45 名女性，95 只眼），年龄为 22 至 84 岁（58.5±16.0 岁）。MCT 松弛度的 2 组测量值分别为 2D 图像上的 3.13±0.75mm 和 2.62±1.50mm（P=0.18），以及 3D 图像上的 2.49±1.58mm 和 2.58±1.72mm（P=0.23）。3D 测量值与 MCT 松弛度之间存在显著相关性（P<.01），而 2D 测量值与 MCT 松弛度之间无显著相关性（P=0.64）。
我们的结果表明，3D 图像上的测量值可以作为 MCT 松弛度的预测指标，并可能作为进一步研究和临床评估中推测 3D MCT 松弛度的基础和参考。
