title: Determinants of crease width in inherent double eyelid of Asian young women.
abstract: BACKGROUND
  The creation of a superior palpebral crease has been the most popular plastic surgery procedure in Asians for several decades. The most important criterion for judging the success of this procedure is the achievement of the desired size and shape of this crease or the perfect crease width. However, the determinants of crease width remain unclear, which may account for the high rate of unsatisfactory results.
  
  
  METHODS
  Standard images were used to study the anatomic parameters, including crease width, crease height, and upper eyelid movement distance (ULMD) at the midpupillary axis, of the inherent double eyelid crease in 32 Chinese women aged 19-26 years. The thickness of the eyelid tissue at 5, 7.5, 10, and 15 mm from the lid margin was measured in the oblique sagittal direction by magnetic resonance imaging (MRI) at the central axis of the optic nerve. Multiple linear regression was used to analyze the relationship between crease width and crease height, ULMD, and eyelid thickness.
  
  
  RESULTS
  Multiple linear regression revealed that crease height, crease thickness, and ULMD were significantly associated with crease width (partial regression coefficients: 0.67, -0.33, and -0.29 respectively). The determination coefficient R2was 0.667 in the regression model, and the result of analysis of variance (ANOVA) showed that the regression model was significant (F = 16.04, p = 0.000).
  
  
  CONCLUSIONS
  In performing upper blepharoplasty, it is important to consider eyelid thickness and movement distance of the upper eyelid margin rather than relying on crease height alone. Attention to these factors will help to achieve the desired size and shape of the crease.
authors: Department of Plastic Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
authors: Yang
authors: Y
authors: Li
authors: Department of Plastic Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
authors: Zhen-Zhen
authors: ZZ
authors: Hu
authors: Medical Imaging Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
authors: Yong-Xing
authors: YX
authors: Du
authors: Department of Plastic Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
authors: Bing
authors: B
authors: Chen
authors: Department of Plastic Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
authors: Jin-Huang
authors: JH
authors: Wang
authors: Medical Imaging Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China.
authors: Xian-Yue
authors: XY
authors: Quan
authors: Department of Plastic Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China. Electronic address: liudalie8811@163.com.
authors: Da-Lie
authors: DL
authors: Liu
mesh_terms: D000328:Adult; D044466:Asian People; D001504:Beauty; D019882:Blepharoplasty; D001837:Body Weights and Measures; D002681:China; D005143:Eyelids / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D012016:Reference Values; D055815:Young Adult
keywords: Anatomy; Asian; Blepharoplasty; Double eyelid; Upper eyelid