title: Timely surgery in intermittent and constant exotropia for superior sensory outcome.
abstract: OBJECTIVE
  To determine whether time of strabismus surgery for patients with acquired intermittent exotropia and constant exotropia influences postoperative sensory outcome.
  
  
  METHODS
  In a retrospective, cross-sectional study, 76 patients with acquired intermittent or constant exotropia and motor realignment were evaluated for postoperative sensory status. Age at surgery, duration of exotropia, and presence of intermittent or constant exotropia were correlated with postoperative sensory status. The 23 male and 53 female patients had an average age of 9.3 years at the time of surgery and a mean follow-up of 5.9 years.
  
  
  RESULTS
  Patients had a significantly greater chance of having postoperative stereoacuity better than 60 seconds of arc (bifixation) if they were surgically aligned before 7 years of age (P <.01) or before 5 years of strabismus duration (P <.05), or with intermittent as compared with constant exotropia (P <.001). Patients with postoperative bifixation had earlier surgical intervention (P <.025) and shorter duration of exotropia (P <.025) than those with postoperative monofixation.
  
  
  CONCLUSIONS
  Patients with intermittent or constant exotropia may achieve superior sensory outcome with motor realignment before age 7, before 5 years of strabismus duration, or while the deviation is intermittent.
authors.affiliation: Department of Ophthalmology, Children's National Medical Center, Washington, DC, USA.
authors.forename: A D
authors.initials: AD
authors.lastname: Abroms
authors.forename: B G
authors.initials: BG
authors.lastname: Mohney
authors.forename: D P
authors.initials: DP
authors.lastname: Rush
authors.forename: M M
authors.initials: MM
authors.lastname: Parks
authors.forename: P Y
authors.initials: PY
authors.lastname: Tong
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005099:Exotropia / Q000601:surgery*; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000601:surgery*; D012189:Retrospective Studies; D012677:Sensation / Q000502:physiology; D013997:Time Factors; D016896:Treatment Outcome; D015348:Vision, Binocular / Q000502:physiology*; D014792:Visual Acuity / Q000502:physiology*