title: Bilateral large peripapillary venous and arterial loops.
abstract: BACKGROUND
  Peripapillary loops of venous origin are extremely rare.
  
  
  METHODS
  A 55-year-old woman was referred to us for further examination of peripapillary vascular abnormalities.
  
  
  METHODS
  Fundus examination and fluorescein angiography clearly showed a venous and an arterial peripapillary loop in both her right and left fundi. The venous loop in the right eye was in a large hairpin configuration, extending into the retina about 1 disc diameter from the optic disc. Fluorescein angiography in the left eye revealed slow and irregular filling of dye into a venous loop that showed stasis of the bloodstream through the loop. Various retinal vascular abnormalities, including cilioretinal artery and triple branching of the retinal vein were also observed.
  
  
  CONCLUSIONS
  The findings in this case of bilateral peripapillary venous and arterial loops and unilateral trifurcation of retinal vein suggest that there could be an association in the other retinal abnormalities. Periodic follow-up examinations seem necessary.
authors.affiliation: Department of Ophthalmology, School of Medicine, Tokyo Medical and Dental University, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Teramoto
authors.forename: K
authors.initials: K
authors.lastname: Ohno-Matsui
authors.forename: T
authors.initials: T
authors.lastname: Tokoro
authors.forename: S
authors.initials: S
authors.lastname: Ohno
mesh_terms: D004396:Coloring Agents; D005124:Eye Abnormalities / Q000175:diagnosis*; D005260:Female; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D006801:Humans; D007208:Indocyanine Green; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009898:Optic Disk / Q000098:blood supply*; D012161:Retinal Artery / Q000002:abnormalities*; D012169:Retinal Vein / Q000002:abnormalities*
chemical_list: D004396:Coloring Agents; D007208:Indocyanine Green