title: Laser-induced chorioretinal venous anastomosis using combined lasers with different wavelengths.
abstract: OBJECTIVE
  To evaluate the effectiveness of combined lasers with different wavelengths in creating chorioretinal venous anastomosis (CRVA) in nonischaemic central retinal vein occlusion (CRVO).
  
  
  METHODS
  In this retrospective, noncomparative, consecutive case series, records of all patients with a diagnosis of nonischaemic CRVO who underwent combined laser treatment to induce CRVA and who were followed-up for 6 months or longer were reviewed.
  
  
  RESULTS
  Records of 85 patients (85 eyes) were analysed. These patients were divided into two groups. In group 1 (24 cases, 24 eyes), combined lasers with two different wavelengths (argon blue-green laser combined with Nd-YAG laser were used. In group 2 (61 cases, 61 eyes), combined lasers with three different wavelengths (argon blue-green laser combined with krypton red laser and Nd-YAG laser) were used. Functional anastomosis formed in 13 out of 24 eyes (54%) in group 1 and 47 out of 61 eyes (77%) in group 2. In patients with successful anastomosis, visual acuity improved for two or more lines in 49 out of 60 eyes (82%), with the remaining eyes undergoing no change. There were no serious complications.
  
  
  CONCLUSIONS
  The use of three laser wavelengths results in the creation of laser anastomosis and the success rate may be higher than when using two wavelengths alone.
authors.affiliation: Ophthalmology Center of Beijing Tong-Ren Hospital, Capital Medical University, Beijing, China.
authors.forename: N
authors.initials: N
authors.lastname: Lu
authors.forename: N L
authors.initials: NL
authors.lastname: Wang
authors.forename: Z H
authors.initials: ZH
authors.lastname: Li
authors.forename: G L
authors.initials: GL
authors.lastname: Wang
authors.forename: F
authors.initials: F
authors.lastname: Zhang
authors.forename: X Y
authors.initials: XY
authors.lastname: Peng
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000714:Anastomosis, Surgical / Q000379:methods*; D002829:Choroid / Q000098:blood supply* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D017075:Laser Coagulation / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012169:Retinal Vein / Q000601:surgery*; D012170:Retinal Vein Occlusion / Q000503:physiopathology / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome; D014792:Visual Acuity