title: Long-term visual outcome of arteriovenous adventitial sheathotomy on branch retinal vein occlusion induced macular edema.
abstract: OBJECTIVE
  To evaluate long-term visual outcome of arteriovenous adventitial sheathotomy in BRVO-induced macular edema.
  
  
  METHODS
  The visual outcomes of 8 patients following vitrectomy with arteriovenous adventitial sheathotomy for BVO-induced macular edema (surgery group) were retrospectively evaluated. The three-year post-operative visual acuity of the surgery group was compared with that of the conservatively managed controls.
  
  
  RESULTS
  All patients were followed for a minimum of 36 months. Mean BCVA (logMAR) in the surgery group changed from 1.10+/-0.34 to 1.19+/-0.70 and to 0.80+/-0.36 at 12 and 36 months, respectively (p=0.959 at 12 months, p=0.018 at 36 months). In the control group, visual acuity improved from 1.15+/-0.43 to 0.43+/-0.44 and to 0.43+/-0.39 at 12 and 36 months, respectively (p=0.015 at 12 months, at p=0.003 at 36 months). A strong trend toward better visual acuity at 12 months and final examination was observed for controls. (surgery vs. control group, p=0.052 at 12 months, p=0.066 at 36 months).
  
  
  CONCLUSIONS
  Considering the favorable natural course of BVO and the unproven effect of reperfusion on macular edema, surgical efficacy of arteriovenous adventitial sheathotomy requires further evaluation.
authors.affiliation: Department of Ophthalmology, College of Medicine, Korea University, Seoul, Korea.
authors.forename: In Kyung
authors.initials: IK
authors.lastname: Oh
authors.forename: Sungwoo
authors.initials: S
authors.lastname: Kim
authors.forename: Jaeryung
authors.initials: J
authors.lastname: Oh
authors.forename: Kuhl
authors.initials: K
authors.lastname: Huh
mesh_terms: D000368:Aged; D003238:Connective Tissue / Q000601:surgery*; D019299:Decompression, Surgical / Q000379:methods; D005260:Female; D006801:Humans; D008269:Macular Edema / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012161:Retinal Artery; D012169:Retinal Vein; D012170:Retinal Vein Occlusion / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology*; D014821:Vitrectomy / Q000379:methods*