title: Prognostic factors predicting the surgical outcome of bilateral lateral rectus recession surgery for patients with infantile exotropia.
abstract: OBJECTIVE
  To determine the presurgery factors affecting early and long-term favorable outcomes of bilateral lateral rectus recession surgery for infantile exotropia.
  
  
  METHODS
  A retrospective study of 50 patients with infantile exotropia (both constant-type and intermittent-type exotropia with onset before 1 year of age) who had bilateral lateral rectus recession surgery correction with more than 1 year follow up. Presurgery data were obtained and evaluated by use of multiple regression analysis.
  
  
  RESULTS
  Smaller presurgery distance deviation (p = 0.042), older age at surgery (p = 0.025), longer interval between onset and surgery (p = 0.020), and more myopic refractive error (p = 0.007) were associated with successful outcome at 6 weeks, but none was correlated with successful outcome at 1 year. Among all data, presurgery distance deviation was the only significant determinant (multiple regression analysis, p = 0.021) for successful outcome at 6 weeks. Presurgery distance deviation (β = 0.952, p < 0.001) was correlated with the distant angle of deviation 6 weeks (β = 0.952, p < 0.001) and 1 year (β = 0.394, p = 0.006) postsurgery.
  
  
  CONCLUSIONS
  Smaller presurgery deviation was found to be associated with more favorable surgical outcome.
authors.affiliation: Department of Ophthalmology, Tung Wah Eastern Hospital, Hong Kong, China, yamcheuksing@gmail.com.
authors.forename: Jason C S
authors.initials: JC
authors.lastname: Yam
authors.forename: Gabriela S L
authors.initials: GS
authors.lastname: Chong
authors.forename: Patrick K W
authors.initials: PK
authors.lastname: Wu
authors.forename: Ursula S F
authors.initials: US
authors.lastname: Wong
authors.forename: Clement W N
authors.initials: CW
authors.lastname: Chan
authors.forename: Simon T C
authors.initials: ST
authors.lastname: Ko
mesh_terms: D017668:Age of Onset; D005099:Exotropia / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D009801:Oculomotor Muscles / Q000503:physiopathology / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures; D011379:Prognosis; D012189:Retrospective Studies; D015348:Vision, Binocular / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology