title: Problems of chorioretinal venous anastomosis by laser for treatment of nonischemic central retinal vein occlusion.
abstract: OBJECTIVE
  Evaluate the efficacy of chorioretinal venous anastomosis in patients with nonischemic retinal vein occlusions with progressive visual loss and to concentrate on complications.
  
  
  METHODS
  Case series of 6 patients, retrospective study. Six patients with nonischemic central retinal vein occlusions and progressive visual loss. Laser photocoagulation was performed to create a chorioretinal venous anastomosis to be able to supply venous blood to the choroid, bypassing the occlusion. Visual acuity, funduscopic appearance and fluorescein angiographic appearance were determined.
  
  
  RESULTS
  Two patients showed a chorioretinal anastomosis (33%), whereas in the other 4 patients the anastomosis could not be created. Yet 1 patient consequently had a neovascular tuft under the laser site. These new vessels caused minor vitreous hemorrhage and a tractional membrane which regressed after 10 months.
  
  
  CONCLUSIONS
  The utilization of a chorioretinal venous anastomosis by laser as a therapeutic modality should be further questioned and thoroughly evaluated and caution must be exercised to avoid vision-threatening complications.
authors.affiliation: Department of Ophthalmology, Abant Izzet Baysal University Faculty of Medicine, Ankara, Turkey. ga04-k@tr-net.net.tr
authors.forename: S G
authors.initials: SG
authors.lastname: Aktan
authors.forename: M
authors.initials: M
authors.lastname: Subaşi
authors.forename: H
authors.initials: H
authors.lastname: Akbatur
authors.forename: M
authors.initials: M
authors.lastname: Or
mesh_terms: D000328:Adult; D000368:Aged; D000714:Anastomosis, Surgical; D002829:Choroid / Q000601:surgery*; D005260:Female; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D006801:Humans; D017075:Laser Coagulation; D008297:Male; D008875:Middle Aged; D009389:Neovascularization, Pathologic / Q000209:etiology; D011183:Postoperative Complications; D012166:Retinal Hemorrhage / Q000209:etiology; D012169:Retinal Vein / Q000601:surgery*; D012170:Retinal Vein Occlusion / Q000473:pathology / Q000601:surgery*; D012171:Retinal Vessels / Q000503:physiopathology; D012189:Retrospective Studies; D016896:Treatment Outcome