Head rotation and the perception of eyelid height and contour.

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  • Additional Information
    • Source:
      Publisher: BMJ Publishing Group Ltd Country of Publication: England NLM ID: 101714806 Publication Model: Electronic Cited Medium: Internet ISSN: 2397-3269 (Electronic) Linking ISSN: 23973269 NLM ISO Abbreviation: BMJ Open Ophthalmol Subsets: MEDLINE
    • Publication Information:
      Original Publication: [London] : BMJ Publishing Group Ltd., [2017]-
    • Subject Terms:
      Blepharoptosis*/surgery ; Eyelid Diseases*/surgery; Humans ; Male ; United States ; Adult ; Middle Aged ; Young Adult ; Female ; Prospective Studies ; Eyelids/surgery ; Perception
    • Abstract:
      Purpose: Effective visual perceptual processing is one of the many components of surgical competence. Human face identification is most efficient when viewed upright. However, it is not yet clear how this perception sensitivity impacts eyelid symmetry. This study investigates surgeons' and laypeople's accuracy and efficiency in perceiving eyelid asymmetry from different spatial perspectives.
      Methods: A prospective psychometric experiment was conducted where oculoplastic surgeons were recruited from the American Society of Ophthalmic Plastic and Reconstructive Surgery and the Brazilian Oculoplastic Surgery Society, and control participants were recruited via crowdsourcing (Amazon's Mechanical Turk). Standard illustrations of the human face with varying degrees of eyelid abnormality, laterality, gender and rotation were presented to participants who were asked to judge whether the eyelids were symmetric or asymmetric.
      Results: The survey was completed by 75 oculoplastic surgeons (49.33% male; mean age of 46.9±10.7) and 192 lay individuals (54.6% male; mean age 34.6±11.3 years). Among oculoplastic surgeons, deviation from upright was significantly associated with increased reaction time and decreased proportion correct (OR per 45° for peak 0.68, 95% CI 0.60 to 0.77, p<0.001; OR per 45° for ptosis 0.52, 95% CI 0.32 to 0.87, p=0.012; OR per 180° for aggregate responses 0.56, 95% CI 0.51 to 0.61, p<0.001). Oculoplastic surgeons demonstrated increasing accuracy and decreasing reaction time with additional trials for both peak and ptosis.
      Conclusion: Oculoplastic surgeons perceive eyelid asymmetries more accurately and can better compensate for inverted sensory information. However, accuracy increases and reaction time decreases with additional trials, suggesting trainability and potential for improvement in inversion disability.
      Competing Interests: Competing interests: DBR and SBD have acted as medical consultants for Horizon Therapeutics. All other authors report no conflicts of interest, financial or otherwise. The authors alone are responsible for the content and writing of the paper.
      (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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    • Grant Information:
      UL1 TR001881 United States TR NCATS NIH HHS
    • Contributed Indexing:
      Keywords: cosmesis; eye lids; orbit; visual perception
    • Publication Date:
      Date Created: 20240404 Date Completed: 20240408 Latest Revision: 20240411
    • Publication Date:
      20240411
    • Accession Number:
      PMC11002378
    • Accession Number:
      10.1136/bmjophth-2023-001557
    • Accession Number:
      38575344