1200例大连汉族成年人面部软组织衰老的测量分析

目的采用虹膜直径尺测量1200倪大连汉族成年人面部软组织老化改变，为亚洲汉族人面部年轻化手术提供参考。方法随机分层抽取中华人民共和国第2代居民身份证电子版照片男、女各600张，选择照片时剔除面部畸形、文眉、文眼线、文唇、眉缺失、上睑上垂和左、右侧上、下睑缘在鼻侧的交汇点不显露者，根据性别、年龄分为6组，每组200张照片：男性18岁组、38岁组及68岁组，女性18岁组、38岁组及68岁组。将每位受测者照片上的虹膜直径分为20等份，每等份为1个单位，为虹膜直径尺。以左，右两侧上、下睑缘在鼻侧的交汇点的水平连线为测量基线，借助Photoshop软件，利用“虹膜直径尺”对自身照片眼周及面部软组织进行测量 。结果 眉高度：女性18岁组（37．59±6．72）单位，38岁组（41.09±5.15）单位，68岁组（36.84±9.45）单位；男性18岁组（36．42±4．22）单位．38岁组（40．22±6．90）单位，68岁组（34.83±9.39）单位；睑裂高度：女性：18岁岁组（18．03±3．13）单位，38岁组（18．66±3.39）单位，68岁组（13.89±2.68）单位：男性18岁组（16．02±2．55）单位．38岁组（15．93±2．06）单位，68岁组（14.77±2.71）单位。具有性别和年龄上的统计学意义。结论随着年龄的增长．亚洲成年男、女的面部软组织变化表现为：①成年人在中年阶段（38岁组）眉高度达到高峰．之后逐渐下降。在3个年龄组中女性眉高度均高于男性。②外眦点逐渐向下方（尾侧）、鼻侧（内侧）移位。③眼球逐渐向下方（尾侧）移位。④两侧口角、鼻尖部以及下颌软组织逐渐向下方（尾侧）移位。⑤虹膜直径尺用于测量自身正位照片上的面部软组织结构标记点．可消除因照片大小不同和拍摄时距离的差异对照片测量结果的影响。

Objective To investigate the facial aging analysis of 1200 Han adult people in Dalian with iris diameter,so as to provide reference for facial rejuvenation in Han people.Methods 1200 facial digital photographs from the second-generation ID card of China were stratified randomly selected as the research sample,excluding facial deformity,tattooing eyebrow,tattooing lid margin,ptosis,lip grain and eyebrow deformity cases,as well as the cases whose join point of upper eyelid and lower eyelid not exposed at the nasal side.These photos were divided into six cohorts:female aged 18,38,and 68 years old;and male aged 18,38,and 68 years old,with 200 cases in each cohort.The individual iris diameter was divided into 20 equal parts in each photograph,with each part marked one unit as individual iris diameter ruler.Ten values were made from a horizontal plane between the medial canthus to ten points at one face (the line between two medial canthus is used as the horizontal line,circumocular and facial soft tissue were measured with individual iris diameter ruler on the photographs),then the results were analyzed with Adobe Photoshop software.Results There are statistically significant differences in eyebrow height (36.42 ±4.22 unit in 18 years old male group,40.22 ± 6.90 unit in 38 years old male group,34.83 ± 9.39 unit in 68 years old male group;37.59 ±6.72 unit in 18 years old female group,41.09 ±5.15 unit in 38 years old female group,36.84 ±9.45 unit in 68 years old female group),palpebral fissure height,physiognomic external canthus height,palpebral fissure width,pupil height and other items (P ＜ 0.05).Conclusions ①The brow position rises to the peak level at middle age(38 years old group),then drops down gradually with aging.②The physiognomic external canthus moves towards the nasal side and caudal side with aging.③Eyeball moves towards caudal side with aging.④The soft tissue around bilateral angle of mouth,nasal tip and submaxilla moves towards caudal side with aging.⑤The measurement of individual iris diameter ruler can apply to analyze the aging changes of facial soft tissue,and is more suitable for the case when facial photographs are taken at different distances.