title: Contralateral lateral rectus recession versus recess-resect for recurrent exotropia after unilateral recess-resect.
abstract: BACKGROUND
  To compare outcomes following contralateral lateral rectus (LR) recession and recess-resect (RR) procedures for recurrent exotropia of 20-25 prism dioptres (PD) after unilateral RR.
  
  
  METHODS
  39 subjects were included in this retrospective study. All underwent, as a primary surgery for intermittent exotropia, unilateral RR on the non-dominant eye. They were assigned to the subsequent contralateral LR recession (LR, n=19) or RR (n=20) group for recurrent exotropia of 20-25 PD. Surgical success was defined as alignment between 5 PD esodeviation and 10 PD exodeviation.
  
  
  RESULTS
  The mean follow-up duration after the reoperation was 32.3±26.4 months in the LR group and 30.5±26.8 in the RR group (p=0.945). The mean deviation angles at postoperative 1 day were -0.7 PD (overcorrection) in the LR group and -4.3 PD in the RR group (p=0.047). The deviation angles at 3 and 6 months postoperatively were not significant (p=0.771, p=0.923). The final successful outcome was achieved in 63.2% of patients in the LR group and in 65% of patients in the RR group (p=0.905).
  
  
  CONCLUSIONS
  Contralateral LR recession was found to be a safe and effective procedure for the treatment of recurrent exotropia of 20-25 PD after unilateral RR for intermittent exotropia. With LR recession, the intentional overcorrection in the immediate postoperative period could be avoided.
authors.affiliation: Department of Ophthalmology, Hallym University College of Medicine, Seoul, Korea.
authors.forename: Joo Hyun
authors.initials: JH
authors.lastname: Kim
authors.forename: Hae Jin
authors.initials: HJ
authors.lastname: Kim
authors.forename: Dong Gyu
authors.initials: DG
authors.lastname: Choi
mesh_terms: D000010:Abducens Nerve / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D003867:Depth Perception / Q000502:physiology; D005099:Exotropia / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009801:Oculomotor Muscles / Q000503:physiopathology / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D011183:Postoperative Complications / Q000517:prevention & control; D012189:Retrospective Studies; D013285:Strabismus / Q000503:physiopathology / Q000601:surgery*; D016896:Treatment Outcome
keywords: Child health (paediatrics); Muscles