title: Retinal vein occlusion and transient monocular visual loss associated with hyperhomocystinemia.
abstract: OBJECTIVE
  To report a 24-year-old man with bilateral central retinal vein occlusions who had preceding episodes of prolonged transient monocular visual loss during which ophthalmoscopic findings were not suggestive of vein occlusion.
  
  
  METHODS
  Case report.
  
  
  RESULTS
  Extensive hematologic studies for causes of vein occlusion were unremarkable with the exception of increased plasma homocysteine in the patient and in his asymptomatic father.
  
  
  CONCLUSIONS
  Impending vein occlusion should be considered in the differential diagnosis of transient monocular visual loss regardless of ophthalmoscopic appearance, and hyperhomocystinemia should be considered as a possible cause of retinal vein occlusion.
authors.affiliation: Department of Ophthalmology, Emory University School of Medicine, Atlanta, GA, USA.
authors.forename: V
authors.initials: V
authors.lastname: Biousse
authors.forename: N J
authors.initials: NJ
authors.lastname: Newman
authors.forename: P
authors.initials: P
authors.lastname: Sternberg
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005654:Fundus Oculi; D006711:Homocystine / Q000097:blood*; D006801:Humans; D008297:Male; D012170:Retinal Vein Occlusion / Q000175:diagnosis / Q000209:etiology*; D014786:Vision Disorders / Q000175:diagnosis / Q000209:etiology*; D015349:Vision, Monocular
chemical_list: D006711:Homocystine