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Factors associated with the recurrence of intermittent exotropia and reoperations in the long term.

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Related Experiment Video

Updated: Sep 10, 2025

Comparison of Three Clinical Stereoscopic Methods for Measuring Binocular Visual Function During Amblyopic Treatment in Unilateral Amblyopia
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Published on: September 27, 2024

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Success of Strabismus Surgery in Intermittent Exotropia.

Pedro Lino1,2,3,4,5, Pedro Vargues de Aguiar1, João Paulo Cunha6,7

  • 1NOVA National School of Public Health, Public Health Research Centre, Comprehensive Health Research Center, CHRC, LA-REAL, CCAL, NOVA University Lisbon, 1649-004 Lisbon, Portugal.

Journal of Personalized Medicine
|August 27, 2025
PubMed
Summary

Strabismus surgery for intermittent exotropia (IXT) in children is highly effective, with a 92.2% success rate. Smaller preoperative deviation angles are the strongest predictor of successful surgical outcomes.

Keywords:
intermittent exotropiarecurrencesurgerysurgical success

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Area of Science:

  • Ophthalmology
  • Pediatric Surgery
  • Strabismus Research

Background:

  • Intermittent exotropia (IXT) is the most common childhood strabismus.
  • Surgery is the primary treatment for ocular deviation and binocular function preservation.
  • Predictors of surgical success in IXT require further investigation.

Purpose of the Study:

  • To evaluate the effectiveness of strabismus surgery in children with IXT.
  • To identify predictors of postoperative alignment stability in pediatric IXT patients.

Main Methods:

  • Retrospective analysis of 258 children with basic-type IXT or divergence excess.
  • Patients underwent bilateral lateral rectus recession.
  • Surgical outcomes and predictive factors were analyzed from clinical records.

Main Results:

  • Overall surgical success rate was 92.2% (238/258 patients).
  • Success rates were comparable between sexes and not significantly influenced by age, IXT subtype, or preoperative occlusion.
  • Smaller preoperative deviation angles (31 ± 7.08∆) were significantly associated with higher success rates compared to larger angles (42 ± 7.27∆).

Conclusions:

  • Strabismus surgery demonstrates high efficacy in treating pediatric IXT.
  • Preoperative deviation angle is the strongest predictor of surgical success.
  • Accurate preoperative assessment is crucial for optimizing surgical planning in IXT management.