Surgical outcomes of medial Rectus advancement for consecutive exotropia

Eur J Ophthalmol. 2022 Nov;32(6):3244-3249. doi: 10.1177/11206721221085850. Epub 2022 Mar 14.


Purpose: To evaluate the surgical results of medial rectus muscle advancement for consecutive exotropia.

Methods: The medical data of patients that underwent reoperation between the years 2000-2020 were collected and reviewed retrospectively. Patients who underwent medial rectus advancement for consecutive exotropia were included. The exclusion criteria were follow-up period shorter than 6 months, past reoperations and restrictive or paralytic strabismus. Success was defined as alignment within 10 PD of orthophoria at last follow-up. The success group of patients was compared with the failure group.

Results: Twenty patients with mean postoperative follow-up from the second surgery of 34.7 ± 29.2 months were included. On last follow-up examination, 9 (45.0%) patients had a successful result. Nine patients had undercorrection and 2 had overcorrection. The two groups were similar in the preoperative amount of mean exotropia, 23.3 ± 9.9 PD in the success group and 29.8 ± 14.0 PD in the failure group. On last follow-up examination, the amount of mean deviation was 2.7 ± 2.6 PD exotropia in the success group and 13.4 ± 23.6 PD exotropia in the failure group.

Conclusion: Medial rectus advancement for the correction of consecutive exotropia was successful in almost half of the cases. Failure was usually due to undercorrection.

Keywords: consecutive exotropia; eye surgery; medial rectus advancement; pediatric ophthalmology; strabismus.

MeSH terms

  • Exotropia* / surgery
  • Follow-Up Studies
  • Humans
  • Oculomotor Muscles / surgery
  • Ophthalmologic Surgical Procedures / methods
  • Retrospective Studies
  • Treatment Outcome
  • Vision, Binocular / physiology