Outcome of inferior oblique recession with or without vertical rectus recession for unilateral superior oblique paresis

Y. Morad, V. Moss Weinstock, S. P. Kraft

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To determine the effectiveness of a standard fixed 10 mm inferior oblique (IO) recession with or without vertical rectus recession in visually mature patients with unilateral superior oblique paresis (SOP) and mild to moderate IO overaction. Methods: The records of 24 patients over 12 years of age who had 10 mm IO recession for SOP, for IO overaction of +1 to +3 (out of maximum +4), with 6+ months of followup were reviewed. Criteria required for a "successful" outcome included: 1. hyperdeviation of 5Δ or less in primary position; 2. elimination of any compensatory abnormal head posture; and 3. elimination of diplopia in the central 30° of the binocular visual field. Results: In 16 cases of IO recession alone, 88% were "successful" and in 8 cases who had in addition either contralateral inferior rectus recession or ipsilateral superior rectus recession, 75% were "successful". IO 10 mm recession alone led to an average reduction of 9.1 PD of hypertropia in primary position. Conclusion: A standard ungraded 10 mm recession of the IO alone or in combination with vertical rectus muscle recession is an effective weakening procedure with a high success rate for patients with unilateral SOP with mild to moderate IO overaction. In occasional cases of undercorrection, a subsequent IO myectomy is very feasible and effective.

Original languageEnglish
Pages (from-to)23-28
Number of pages6
JournalBinocular Vision and Strabismus Quarterly
Volume16
Issue number1
StatePublished - 2001
Externally publishedYes

Keywords

  • Abnormal compensatory
  • Binocular vision
  • Head posture
  • Hypertropia
  • Inferior oblique muscle
  • Inferior oblique recession
  • Outcome study
  • Palsy
  • Retrospective
  • Strabismus surgery
  • Study
  • Superior oblique muscle
  • Visual field of binocular vision

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