title: Dilation of the minor arterial circle of the iris preceding rubeosis iridis during retinal vein occlusion.
abstract: OBJECTIVE
  To report in four patients with retinal vein occlusion the presence of biomicroscopically visible circulation in the minor arterial circle of the iris, preceding rubeosis iridis in two cases.
  
  
  METHODS
  Retrospective observational case series.
  
  
  METHODS
  Four patients with ischemic type of central or hemi-central retinal vein occlusion seen at a single center.
  
  
  RESULTS
  Dilation of the minor arterial circle remnants with biomicroscopically visible circulation was observed in four eyes of four adult patients with severe retinal ischemia secondary to retinal vein occlusion and preceded the occurrence of anterior segment neovascularization in two cases.
  
  
  CONCLUSIONS
  In patients with ischemic retinal vein occlusion, the clinical finding of a dilation of the minor arterial circle may indicate the necessity of a closer follow-up to make a timely decision on panretinal photocoagulation.
authors.affiliation: Department of Ophthalmology of the Fondation Ophtalmologique Rothschild, Paris, France. michel.paques@laposte.net
authors.forename: Michel
authors.initials: M
authors.lastname: Paques
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Girmens
authors.forename: Eva
authors.initials: E
authors.lastname: Rivière
authors.forename: José
authors.initials: J
authors.lastname: Sahel
mesh_terms: D000368:Aged; D001158:Arteries / Q000473:pathology*; D004108:Dilatation, Pathologic; D005260:Female; D005451:Fluorescein Angiography; D006801:Humans; D007498:Iris / Q000098:blood supply*; D007499:Iris Diseases / Q000175:diagnosis* / Q000209:etiology / Q000601:surgery; D007511:Ischemia / Q000175:diagnosis / Q000209:etiology / Q000601:surgery; D017075:Laser Coagulation; D008297:Male; D008875:Middle Aged; D012170:Retinal Vein Occlusion / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D012171:Retinal Vessels / Q000473:pathology* / Q000601:surgery; D012189:Retrospective Studies