title: [The application of anterior segment optical coherence tomography in residual strabismus surgery].
abstract: OBJECTIVE
  To evaluate the application of anterior segment optical coherence tomography (ASOCT) in surgical design for residual horizontal strabismus patients.
  
  
  METHODS
  This article was a retrospective case series analysis. Total 20 residual strabismus patients (13 with residual exotropia and 7 with residual esotropia) in Eye Hospital of Wenzhou Medical University from Jan 2009 to Jan 2011 were studied. Routine strabismus examinations were completed preoperatively. The distance between insertion of horizontal rectus muscles and corneal limbus were measured with ASOCT preoperatively and calipers intraoperatively. Reoperational amount and method for residual strabismus patients were designed according to the limbus-insertion distance. The paired t test was used to compare the agreement between two methods of measurement of limbus-insertion distance. The cure rates of reoperation were analyzed.
  
  
  RESULTS
  No statistical significance was observed between the measurements with ASOCT (7.7±1.7) mm and calipers (7.8±1.1)mm (t=-1.37, P=0.19). According to ASOCT image, the second surgical method was re-recession muscle for 4 patients; re-recession of original performed muscle combined with antagonist muscle resection for 10 patients and antagonist muscle resection combined with horizontal rectus muscle recession in fellow eye for 6 patients. All the surgical processes went on successfully, no severe intraoperative and postopereative complications were noted. Sixteen cases were cured (80%) .
  
  
  CONCLUSIONS
  Horizontal rectus muscle evaluation with ASOCT preoperatively may benefit the choice of performed muscle, calculation of surgical amount, reduction of unnecessary surgical procedure and optimization second surgical design for residual strabismus patients. (Chin J Ophthalmol, 2016, 52: 568-573).
authors: Department of Pediatric Ophthalmology, Eye Hospital of Wenzhou Medical University at Hangzhou, Hangzhou 310020, China.
authors: L J
authors: LJ
authors: Hou
authors: X M
authors: XM
authors: Wu
authors: R
authors: R
authors: Zhuo
authors: F
authors: F
authors: Zhang
authors: F
authors: F
authors: Lyu
mesh_terms: D000869:Anterior Eye Segment / Q000000981:diagnostic imaging* / Q000601:surgery; D004948:Esotropia / Q000601:surgery; D005099:Exotropia / Q000601:surgery; D006801:Humans; D016850:Limbus Corneae; D009801:Oculomotor Muscles / Q000000981:diagnostic imaging / Q000601:surgery*; D012086:Reoperation; D012189:Retrospective Studies; D013285:Strabismus / Q000000981:diagnostic imaging* / Q000601:surgery*; D041623:Tomography, Optical Coherence / Q000379:methods*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome