title: [Central retinal vein occlusion and internal carotid artery hypoplasia: a case report].
abstract: BACKGROUND
  Retinal vein occlusion is usually encountered in the elderly and is often associated with systemic vascular disease. It is rarer in young subjects and requires a serious etiological search to best adapt the treatment.
  
  
  METHODS
  We report the case of a central retinal vein occlusion (CRVO) in a 26-year-old patient who had no pathological history, discovered at a sudden decline of vision in the right eye, reduced to light perception. Fundus examination and retinal angiography showed an edematous CRVO. Radiologic imaging revealed a narrowing of the right carotid canal, probably congenital, and a reduction in the size of the right common carotid artery and internal carotid artery. Progression was favorable without treatment, and visual acuity improved to 8/10.
  
  
  CONCLUSIONS
  The etiological investigation in retinal vein occlusion in young people must be exhaustive. The visual prognosis is variable and may depend on the etiology.
authors.affiliation: Service d'Ophtalmologie, Hôpital Habib Thameur, Tunis, Tunisie. hela.jedidi@rns.tn
authors.forename: H
authors.initials: H
authors.lastname: Mazlout
authors.forename: S
authors.initials: S
authors.lastname: Trojet
authors.forename: A
authors.initials: A
authors.lastname: Toumi
authors.forename: S
authors.initials: S
authors.lastname: Kefi
authors.forename: K
authors.initials: K
authors.lastname: Ben Kacem
authors.forename: H
authors.initials: H
authors.lastname: Nouhaili
authors.forename: R
authors.initials: R
authors.lastname: Dkhillali
authors.forename: M A
authors.initials: MA
authors.lastname: Afrit
authors.forename: A
authors.initials: A
authors.lastname: Kraiem
mesh_terms: D000328:Adult; D002343:Carotid Artery, Internal / Q000002:abnormalities*; D005260:Female; D006801:Humans; D015356:Retinal Artery Occlusion / Q000150:complications*