Risk factors for excessive postoperative exo-drift after unilateral lateral rectus muscle recession and medial rectus muscle resection for intermittent exotropia

Shin Morisawa, Ichiro Hamasaki, Kiyo Shibata, Takehiro Shimizu, Reika Kono, Manabu Miyata, Takashi Furuse, Satoshi Hasebe, Hiroshi Ohtsuki, Yuki Morizane, Fumio Shiraga

Research output: Contribution to journalArticlepeer-review

Abstract

Background: To detect significant factors associated with excessive postoperative exo-drift in young patients with intermittent exotropia who had undergone unilateral lateral rectus muscle recession and medial rectus muscle resection. Methods: We retrospectively examined the records of 64 consecutive patients < 18 years old who underwent surgery between April 2004 and December 2011. We sought risk factors for excessive postoperative exo-drift among patients' demographic and clinical characteristics using univariate and multivariable linear regression analysis. Results: Younger patients (P = 0.007), and those with larger preoperative exo-deviation at distance (P = 0.033), a lower incidence of peripheral fusion at distance (P = 0.021) or a greater postoperative initial eso-deviation (P = 0.001), were significantly more likely to have an excessive postoperative exo-drift (> 20 prism diopters). Univariate analysis revealed significant associations between excessive postoperative exo-drift and age at surgery (P = 0.004), preoperative exo-deviation at distance (P = 0.017) and postoperative initial eso-deviation at distance (P < 0.001). Multivariable linear regression analysis showed that postoperative initial eso-deviation at distance (P = 0.008) was significantly associated with postoperative exo-drift. Conclusions: Postoperative exodrift in unilateral RR is predicted by the initial postoperative eso-deviation, which may offset the overcorrection. However, the exo-drift is greater in cases with a large preoperative exo-deviation and/or at a younger age, and should be followed carefully.

Original languageEnglish
Article number216
JournalBMC Ophthalmology
Volume20
Issue number1
DOIs
Publication statusPublished - Jun 5 2020

Keywords

  • Intermittent exotropia
  • Postoperative exo-drift
  • Recession and resection procedure
  • Recurrent exotropia
  • Strabismus surgery

ASJC Scopus subject areas

  • Ophthalmology

Fingerprint Dive into the research topics of 'Risk factors for excessive postoperative exo-drift after unilateral lateral rectus muscle recession and medial rectus muscle resection for intermittent exotropia'. Together they form a unique fingerprint.

Cite this