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Upper Eyelid Contour Changes After Müller's Muscle Conjunctiva Resection.

Antonio A V Cruz1,2, Daniela Lucena3, Bruna Equiterio3

  • 1School of Medicine of Ribeirão Preto- University of São Paulo, São Paulo, Brazil. aavecruz.fmrp@gmail.com.

Aesthetic Plastic Surgery
|July 10, 2024
PubMed
Summary

Müller

Keywords:
BlepharoptosisMüller's muscle conjunctiva resectionSurgeryUpper eyelid contour

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Area of Science:

  • Ophthalmic surgery
  • Plastic surgery

Background:

  • Ptosis correction often involves Müller's muscle conjunctiva resection (MMCR).
  • Variations in surgical technique may impact upper eyelid contour outcomes.

Purpose of the Study:

  • To analyze upper eyelid contour changes following Müller's muscle conjunctiva resection (MMCR).
  • To compare outcomes across four surgeons performing MMCR.

Main Methods:

  • Comparative cross-sectional analysis of 88 upper eyelids from 65 patients.
  • Pre- and postoperative lid contours were measured using Bézier lines.
  • Analysis included patients with and without significant preoperative ptosis.

Main Results:

  • Müller's muscle conjunctiva resection (MMCR) corrected the lateral eyelid contour in all groups.
  • Significant medial ptosis preoperatively was associated with undercorrection of the nasal lid contour post-MMCR.
  • Surgical instruments for posterior lamella entrapment varied among surgeons.

Conclusions:

  • The extent of medial tissue resection is critical in Müller's muscle conjunctiva resection (MMCR).
  • Adequate medial resection is essential to prevent postoperative nasal undercorrection, regardless of the instrument used.