title: Long-term surgical outcomes and factors for recurrence after unilateral lateral rectus muscle recession.
abstract: To evaluate long-term surgical outcomes and risk factors for recurrence after unilateral lateral rectus muscle recession (ULR) in children with small to moderate angle intermittent exotropia (IXT).
  
  
  
  214 patients with basic type IXT of 15-24 prism dioptres (PD) who underwent ULR were included. The main outcome measure was success rate at 2 years after surgery and at final follow-up. The risk factors related to recurrence were evaluated using univariable and multivariable logistic regression analyses.
  
  
  
  Success rate at postoperative 2 years was 92.5% and at final examination after a mean follow-up of 3.9 years was 83.2%. No overcorrection was observed. Preoperative exodeviation of 20-24 PD was the significant risk factor for recurrence according to both univariable (OR=3.577, p=0.022) and multivariable analysis (OR=3.265, p=0.034).
  
  
  
  The overall long-term successful alignment rate of ULR for 15-24 PD of IXT was good. However, patients with 20-24 PD of IXT showed worse prognosis compared with 15-19 PD of IXT.
authors.affiliation: Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea Department of Ophthalmology, Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea.
authors.forename: In Jeong
authors.initials: IJ
authors.lastname: Lyu
authors.affiliation: Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Kyung-Ah
authors.initials: KA
authors.lastname: Park
authors.affiliation: Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Sei Yeul
authors.initials: SY
authors.lastname: Oh
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005099:Exotropia / Q000503:physiopathology / Q000601:surgery*; D005133:Eye Movements / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009801:Oculomotor Muscles / Q000503:physiopathology / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D011184:Postoperative Period; D012008:Recurrence; D012189:Retrospective Studies; D018570:Risk Assessment / Q000379:methods*; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome; D015348:Vision, Binocular / Q000502:physiology*; D014792:Visual Acuity
keywords: Muscles; Treatment Surgery