Comparison of Different Surgical Approaches to Inferior Oblique Overaction

Erin G. Sieck, Anirudh Madabhushi, Jennifer L. Patnaik, Jennifer L. Jung, Anne M. Lynch, Jasleen K. Singh

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Background: The purpose of this study is to compare surgical outcomes of recession, anteriorization, and myotomy for the treatment of inferior oblique overaction (IOOA). Methods: A retrospective chart review of all patients undergoing IOOA correction from July 2010 to March 2017 at the Children’s Hospital of Colorado was performed. Preoperative grading of IOOA (+0.5 to +4.0) was compared to post-operative IOOA (0 to +4.0). The goal was reduction of IOOA to 0, but any decrease in IOOA was measured. Results: There were a total of 260 patients with 357 eyes. Gender and age were similar across surgery types. A 94.6% of eyes had a decrease in IOOA with recession (n = 165) of the inferior oblique while 86.1% decreased to no IOOA. Anteriorization of the inferior oblique (n = 115) decreased overaction in 97.4% of eyes with 81.7% improving to zero degree of IOOA. Myotomy of the inferior oblique (n = 77) was found to decrease overaction in 98.7% of eyes and reduce IOOA to zero in 88.3%. There was no significant difference among type of surgery and outcome. Conclusion: All three surgical interventions were found to be equally successful in reducing the amount of IOOA.

Original languageEnglish
Pages (from-to)89-93
Number of pages5
JournalJournal of Binocular Vision and Ocular Motility
Issue number3
StatePublished - Jul 2 2020


  • Strabismus surgery
  • inferior oblique overaction
  • strabismus


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