title: [Experimental research of laser-induced collaterals in retinal vein occlusion].
abstract: OBJECTIVE
  To evaluate the feasibility and safety of establishing chorioretinal venous anastomosis in rabbit eyes with a model of branch retinal vein occlusion
  
  
  METHODS
  By using laser photocoagulation, a chorioretinal venous anastomosis was created in rabbit eyes in which a branch retinal vein occlusion had previously been established photochemically. A similar attempt to create an anastomosis was made in the control eyes in which no branch vein occlusion was present.
  
  
  RESULTS
  In the 21 eyes with the model of branch retinal vein occlusion, a chorioretinal venous anastomosis formed in 4 eyes within 3 to 5 weeks. In the control eyes, an anastomosis in one eye presented by 5 weeks, during follow-up of 2 to 5 months. The hemorrhage in choroid, retina and vitreous associated with laser photocoagulation were absorbed within 3 weeks, and no other severe complications were found.
  
  
  CONCLUSIONS
  Chorioretinal venous anastomosis can be created by using laser photocoagulation. This technique is relatively safe. However, to improve the rate of successfully creating an anastomosis, more research work needs to be performed.
authors.affiliation: Department of Ophthalmology, Affiliated Baogang Hospital, Shanghai Second Medical University, Shanghai 201900, China.
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.forename: Z
authors.initials: Z
authors.lastname: Shen
mesh_terms: D000714:Anastomosis, Surgical / Q000379:methods; D000818:Animals; D002829:Choroid / Q000098:blood supply*; D005240:Feasibility Studies; D005260:Female; D017075:Laser Coagulation / Q000379:methods*; D008297:Male; D011817:Rabbits; D012169:Retinal Vein / Q000601:surgery*; D012170:Retinal Vein Occlusion / Q000601:surgery*