title: Central retinal vein occlusion with further reduction of retinal blood flow one year after radial optic neurotomy.
abstract: OBJECTIVE
  To report a case of central retinal vein occlusion (CRVO) that had vitrectomy with radial optic neurotomy (RON), but the retinal blood flow (RBF) was still reduced 1 year later.
  
  
  METHODS
  Interventional case report.
  
  
  METHODS
  An 80-year-old woman had undergone vitrectomy and RON for a CRVO. She had a complete ophthalmic examination, including the RBF analysis using the dye dilution method before and after RON.
  
  
  RESULTS
  Seven months after RON, her visual acuity improved from 20/50 to 20/25, and her foveal thickness was decreased from 733 to 213 microm. Indocyanine green angiography demonstrated chorioretinal anastomoses. At 1 year postoperatively, the RBF was reduced from 23.2 to 18 0.1 pixel(2)/s, and the foveal thickness was increased to 767 microm. Her visual acuity decreased to 20/100. The chorioretinal anastomoses were still patent.
  
  
  CONCLUSIONS
  These results demonstrate that a further reduction of RBF can occur after RON, and blood flow in the chorioretinal anastomoses may be insufficient to prevent the event.
authors.affiliation: Department of Ophthalmology, Fujita Health University School of Medicine, 1-98 Toyoake, Aichi 470-1192, Japan. naoichi@fujita-hu.ac.jp
authors.forename: Naoichi
authors.initials: N
authors.lastname: Horio
authors.forename: Masayuki
authors.initials: M
authors.lastname: Horiguchi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001783:Blood Flow Velocity; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D013508:Ophthalmologic Surgical Procedures; D009900:Optic Nerve / Q000098:blood supply / Q000601:surgery*; D011183:Postoperative Complications; D012039:Regional Blood Flow; D012170:Retinal Vein Occlusion / Q000209:etiology* / Q000503:physiopathology* / Q000601:surgery; D012171:Retinal Vessels / Q000503:physiopathology*; D014792:Visual Acuity; D014821:Vitrectomy