title: Horizontal muscle transposition or oblique muscle weakening for the correction of V pattern?
abstract: OBJECTIVE
  To report and to analyze the efficacy of horizontal rectus muscle transposition and inferior oblique muscle weakening in terms of pattern correction for patients with V pattern.
  
  
  METHODS
  The review of the medical files identified 55 patients who had esotropia (ET) or exotropia (XT) with V pattern. The primary outcome measure was the amount of V pattern collapse (Δ).
  
  
  RESULTS
  Of the 55 patients (mean age 22.1 ± 9.5 years), 27 (49.1%) were males and 28 (50.9%) were females. The type of deviations was XT in 30 patients (54.5%) and ET in 25 patients (45.5%). Inferior oblique muscle weakening was performed in 43 (78.2%) patients, whereas horizontal muscle transposition was carried out in 12 (21.8%) patients in addition to recession-resection procedures. The amount of pattern was significantly reduced in both groups (P=0.01 for the horizontal offset group and P<0.01 for the oblique muscle weakening group).
  
  
  CONCLUSIONS
  Oblique muscle weakening surgery and horizontal muscle offset are effective in the correction of V pattern when the amount of pattern is under 30Δ.
authors: Hacettepe University Faculty of Medicine, Department of Ophthalmology, Ankara, Turkey.
authors: H T
authors: HT
authors: Sekeroglu
authors: Hacettepe University Faculty of Medicine, Department of Ophthalmology, Ankara, Turkey.
authors: K E
authors: KE
authors: Turan
authors: Hacettepe University Faculty of Medicine, Department of Ophthalmology, Ankara, Turkey.
authors: S
authors: S
authors: Uzun
authors: Hacettepe University Faculty of Medicine, Department of Ophthalmology, Ankara, Turkey.
authors: E C
authors: EC
authors: Sener
authors: Hacettepe University Faculty of Medicine, Department of Ophthalmology, Ankara, Turkey.
authors: A S
authors: AS
authors: Sanac
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D004948:Esotropia / Q000601:surgery*; D005099:Exotropia / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D009801:Oculomotor Muscles / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures / Q000379:methods; D012189:Retrospective Studies; D055815:Young Adult