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Postoperative drifts after adjustable-suture strabismus surgery

D Eino1, S P Kraft

  • 1Hospital for Sick Children, Toronto, Ont.

Canadian Journal of Ophthalmology. Journal Canadien D'Ophtalmologie
|April 1, 1997
PubMed
Summary

Adjustable-suture strabismus surgery achieved high success rates, with minimal drift observed at 6-8 months post-operation. This technique for horizontal strabismus offers symmetric drift tendencies across patient groups.

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Area of Science:

  • Ophthalmology
  • Surgical Techniques

Background:

  • Horizontal strabismus surgery aims to correct eye alignment.
  • Adjustable-suture techniques allow for intraoperative or postoperative modifications.
  • Predetermined target angles guide surgical correction.

Purpose of the Study:

  • To evaluate drift patterns and success rates of adjustable-suture horizontal strabismus surgery.
  • To assess outcomes when patients are aligned to specific target angles.

Main Methods:

  • A case series of 109 patients (aged 15-72) with esotropia or exotropia.
  • Patients underwent adjustable-suture strabismus surgery (primary or reoperation).
  • Alignment was targeted to specific prism diopter (PD) ranges; outcomes measured up to 8 months post-surgery.

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Main Results:

  • Overall, 44.0% of patients required suture adjustment.
  • Mean drifts from final alignment at 6-8 months were 1 PD (esotropia) and 3-7 PD (exotropia), predominantly in the exotropic direction.
  • Surgical success rates ranged from 82.4% to 94.4% across patient groups.

Conclusions:

  • High success rates were achieved with adjustable-suture strabismus surgery at 6-8 months, attributed to target alignments.
  • Drift tendencies were symmetric around the mean in all four patient groups.
  • The technique is effective for both primary and reoperation cases.