title: Ocular alignment after bilateral lateral rectus recession in exotropic children with cerebral palsy.
abstract: OBJECTIVE
  To compare the surgical outcomes of exotropia patients with cerebral palsy (CP) and controls without CP.
  
  
  METHODS
  30 patients with exotropia and CP and 60 age-matched controls without CP who underwent bilateral lateral rectus (BLR) recession were retrospectively enrolled. All patients underwent BLR recession according to Parks' method. Surgical success was defined by esotropia deviation ≤5 PD (prism diopters) and exotropia deviation ≤10 PD. Success rate, cumulative probabilities of success, and postoperative change of angle deviations using a linear mixed model were evaluated.
  
  
  RESULTS
  Mean postoperative follow-up times were 21.60±8.62 months for the CP group and 25.60±10.82 months for the control group (p=0.081). Mean preoperative deviation was 30.97±10.54 PD in the CP group and 29.75±7.52 PD in the control group (p=0.530), which was reduced to 4.44±7.13 PD and 7.43±7.59 PD, respectively (p=0.093) after BLR recession. Using linear mixed model analysis, the estimated mean postoperative deviation of both groups was in the success range at all times tested. At the final visit, successful surgical outcomes were achieved in 76.7% of the CP group and 56.7% of the control group (p=0.179). Differences in the cumulative probability of surgical success were not statistically significant between the two groups (p=0.106, log rank test).
  
  
  CONCLUSIONS
  CP patients with exotropia showed successful ocular alignment comparable to that of controls after BLR recession of at least 2 years.
authors.affiliation: Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
authors.forename: So Young
authors.initials: SY
authors.lastname: Han
authors.affiliation: Department of Ophthalmology, Eye and Ear Hospital, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea.
authors.forename: Jinu
authors.identifier: http://orcid.org/0000-0002-8607-6625
authors.initials: J
authors.lastname: Han
authors.affiliation: Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
authors.forename: Sueng-Han
authors.identifier: http://orcid.org/0000-0002-8607-6625
authors.initials: SH
authors.lastname: Han
authors.affiliation: Department of Ophthalmology, Eye and Ear Hospital, Severance Hospital, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Republic of Korea.
authors.forename: Jong Bok
authors.initials: JB
authors.lastname: Lee
authors.affiliation: Department of Ophthalmology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Republic of Korea.
authors.forename: Soolienah
authors.initials: S
authors.lastname: Rhiu
mesh_terms: D002547:Cerebral Palsy / Q000150:complications*; D002648:Child; D005099:Exotropia / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009801:Oculomotor Muscles / Q000503:physiopathology / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures; D012029:Refraction, Ocular / Q000502:physiology; D012086:Reoperation; D012189:Retrospective Studies; D015348:Vision, Binocular / Q000502:physiology*; D014792:Visual Acuity / Q000502:physiology
keywords: Child health (paediatrics); Muscles; Treatment Surgery