【 文献重点摘要 】
 

Background: This study evaluated dynamic changes in eyebrow position related to aging.

Methods: Female participants were recruited and separated into two groups aged 20–30 years (the younger group, n = 20; mean age, 24.8 years) and 50–70 years (the older group, n = 20; mean age, 55.8 years). Photogrammetry was used to determine the eyebrow position at the medial canthus (MC), lateral limbus, lateral canthus, and lateral end point (EP) for 6 actions: smooth opening (the reference action) and closing of the eye, forward gaze, maximum opening and closing of the eye, and maximum frown. Videos were also recorded.

Results: No differences in eyebrow position were detected at the MC when opening or closing the eyes smoothly, gazing straight ahead, or closing the eyes maximally. For all 6 actions, the position of the lateral EP in the older group was significantly lower than in the younger group (P = 0.003), and the smallest degree of vertical movement at this point was found in both age groups (P < 0.001). Vertical movement at the 4 landmarks of the eyebrows decreased with aging.

Conclusions: Eyebrow position was unchanged at the MC with aging, except at maximal eye opening and maximal frown. No differences in eyebrow position were observed between the younger and older groups when eyes were maximally closed, except at the EP. It is important to focus on correction of the lateral EP for periorbital rejuvenation.

Keywords: Aging, Physiology, Anthropometry, Eyebrow, Female

背景：本研究评估了与衰老相关的眉毛位置的动态变化。

方法：招募女性受试者，年龄20~30岁(青年组，n=20，平均年龄24.8岁)和50~70岁(老年组，n=20，平均55.8岁)。用摄影测量法测定眉部在内眼角(MC)、外眼缘、外眼角和外侧终点(EP)6个动作的位置：平稳睁眼(参考动作)和闭眼动作、向前凝视动作、眼睛最大张开和最大闭合动作、最大皱眉动作。视频也被录制下来。

结果：平缓睁眼、平稳闭眼、直视前方、最大闭眼时，MC的眉位无明显差异(P>0.0 5)，但MC的眉位差异无统计学意义(P>0.0 5)。在所有6种动作中，老年组的外侧EP位置均明显低于青年组(P=0.003)，且这一点的垂直运动程度在两个年龄组中均最小(P<0.001)。眉毛4个标志点的垂直移动量随年龄增长而减少。

结论：除最大张眼期和最大皱眉期外，眉位在MC处随年龄增长无明显变化。在最大限度闭眼时，年轻组和老年组之间的眉毛位置没有观察到差异，除了EP。强调眼眶周围年轻化的侧方EP矫正是很重要的。

关键词：衰老；生理学；人体测量学；眉毛；女性