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Computerized Photogrammetry Used to Calculate the Brow Position Index

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  • Aesthetic
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Abstract

Background

The orbital region is of vital importance to facial expression. Brow ptosis, besides having an impact on facial harmony, is a sign of aging. Various surgical techniques have been developed to increase the efficacy of brow-lift surgery. However, no consensus method exists for an objective measurement of the eyebrow position due to the curvature of the face. Therefore, this study aimed to establish a method for measuring the eyebrow position using computerized photogrammetry.

Methods

For this study, 20 orbital regions of 10 volunteers were measured by direct anthropometry using a digital caliper and by indirect anthropometry (computerized photogrammetry) using standardized digital photographs. Lines, points, and distances were defined based on the position of the anthropometric landmarks endocanthion and exocanthion and then used to calculate the brow position index (BPI). Statistical analysis was performed using Student’s t test with a significance level of 5 %.

Results

The BPI values obtained by computerized photogrammetric measurements did not differ significantly from those obtained by direct anthropometric measurements (p > 0.05). The mean BPI was 84.89 ± 10.30 for the computerized photogrammetric measurements and 85.27 ± 10.67 for the direct anthropometric measurements.

Conclusion

The BPI defined in this study and obtained by computerized photogrammetry is a reproducible and efficient method for measuring the eyebrow position.

Level of Evidence III

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.

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Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Division of Plastic Surgery, Universidade Federal de São Paulo (UNIFESP), Rua Napoleão de Barros, 715, 4o. andar, São Paulo, SP, 04024-900, Brazil

    Naif Thadeu Naif-de-Andrade, Bernardo Hochman & Lydia Masako Ferreira

  2. Ribeirão Preto School of Medicine General Hospital, University of São Paulo-USP, Ribeirão Preto, SP, Brazil

    Camila Zirlis Naif-de-Andrade

Authors
  1. Naif Thadeu Naif-de-Andrade
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  2. Bernardo Hochman
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  3. Camila Zirlis Naif-de-Andrade
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  4. Lydia Masako Ferreira
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Corresponding author

Correspondence to Lydia Masako Ferreira.

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Naif-de-Andrade, N.T., Hochman, B., Naif-de-Andrade, C.Z. et al. Computerized Photogrammetry Used to Calculate the Brow Position Index. Aesth Plast Surg 36, 1047–1051 (2012). https://doi.org/10.1007/s00266-012-9961-7

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  • DOI: https://doi.org/10.1007/s00266-012-9961-7

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