Surgically induced astigmatism following medial rectus recession: short-term and long-term outcomes

J Pediatr Ophthalmol Strabismus. 2014 May-Jun;51(3):171-6. doi: 10.3928/01913913-20140305-01. Epub 2014 Mar 12.


Purpose: The current study aimed to investigate short- and long-term postoperative ocular refractive effects of medial rectus recession on the involved eye and to describe the detectable effects in detail by the results of vector analysis.

Methods: Data of patients in whom medial rectus recession was performed between 2010 and 2012 were retrospectively evaluated. The study included 52 eyes of 32 patients. Patients with a history of previous ocular surgery, congenital or progressive corneal disease, familial or acquired posterior segment disease, glaucoma, a history of ocular trauma, or any neurological or systemic disease were excluded. Best-corrected and uncorrected visual acuities and refraction examination findings of the patients were recorded before the surgery and at the postoperative first month and first year. A vector analysis program was used to analyze surgically induced astigmatism.

Results: Significant myopic shift and astigmatic change were determined in the spherical equivalent refraction in the early postoperative period (first month); however, these changes disappeared in the long term (at the postoperative first year). A positive correlation was not observed between the amount of surgical recession and the results of ophthalmic examination at the postoperative first month and first year.

Conclusions: Only postoperative first month spherical equivalent showed a positive correlation with the amount of surgical recession; however, this correlation disappeared at the postoperative first year.

MeSH terms

  • Adolescent
  • Adult
  • Astigmatism / etiology*
  • Astigmatism / physiopathology
  • Child
  • Child, Preschool
  • Female
  • Humans
  • Male
  • Myopia / etiology*
  • Myopia / physiopathology
  • Oculomotor Muscles / surgery*
  • Ophthalmologic Surgical Procedures / adverse effects*
  • Postoperative Complications*
  • Refraction, Ocular
  • Retrospective Studies
  • Strabismus / surgery*
  • Vision, Binocular / physiology
  • Visual Acuity / physiology
  • Young Adult