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January 1, 2021Journal of Current OphthalmologyOpen Access

Outcomes and Dose-Response Ratio of Surgery on Three Muscles in Large-Angle Exotropia

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Authors

RNReza NabieTabriz University of Medical SciencesVMVahideh ManouchehriTabriz University of Medical SciencesPLParinaz LesanTabriz University of Medical Sciences

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Overview

Retrospective study demonstrates high alignment success following three-muscle surgery in large-angle exotropia, suggesting effective correction with minimal risk of undercorrection.

Key Points

  • To assess the efficacy, success rate, and mean dose-response ratio of simultaneous three-muscle surgery in patients with large-angle exotropia.
  • Retrospective review of 48 patients (mean age 25.4 ± 14.3 years, range 1–55) with preoperative exodeviation between 50 and 80 prism diopters (PD).
  • Surgical intervention consisted of bilateral lateral rectus recession and unilateral medial rectus resection, with a mean follow-up of 15 ± 25 months (range, 3–144).
  • Mean preoperative deviation of 62.8 ± 7.5 PD decreased to 3.8 ± 7.5 PD postoperatively, achieving success within 10 PD of orthophoria in 85.4% of patients.
  • The mean combined recession and resection was 23 ± 1.3 mm, yielding a mean dose-response ratio of 2.5 ± 0.3 PD/mm (range, 0.9–3.1 PD/mm) with a 14.6% undercorrection rate.

Cite This Study

Nabie et al. (2021) studied this question.

synapsesocial.com/papers/6a7eb4e3084666b5350d28a3https://doi.org/10.4103/joco.joco_115_20
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1SURGICAL OUTCOME OF THREE MUSCLES SURGERY IN ONE SINGLE PROCEDURE OF LARGE-ANGLE EXOTROPIA: A CASE REPORT2024
  2. 2Comparative Evaluation of Unilateral Recession-Plication Versus Bilateral Three-Muscle Surgery for Large-Angle Exotropia2026
  3. 3Challenge to the concept of surgical dose-response for moderate to large angle exotropia2026
  4. 4Surgery of Large Angle Exotropia1980 · 49 citations
  5. 5Long-term Outcomes of Bilateral Lateral Rectus Recession Using a Modified Normogram for Targeting Small Overcorrection in Intermittent Exotropia2024