title: Vascular shunt of the optic disc resembling neovascularization in a diabetic patient with optic disc drusen.
abstract: OBJECTIVE
  To report an insulin-dependent diabetic patient who was referred by the diabetic screening clinic as having proliferative diabetic retinopathy who was found to have bilateral optic disc drusen with optociliary shunt resembling neovascularization on the disc.
  
  
  METHODS
  Complete ocular evaluation including a fluorescein angiography was performed.
  
  
  RESULTS
  Fundus examination showed signs of mild nonproliferative diabetic retinopathy in the right eye and the presence of well-defined optic disc drusen in both eyes with a peculiar vascular abnormality resembling neovascularization on the right disc. The central retinal vein pulsation was normal on digital examination. Autofluorescence confirmed the presence of the optic disc drusen in both eyes. Fluorescein angiography showed no leakage from the optociliary shunt. The vascular abnormality has remained stable for 2 years.
  
  
  CONCLUSIONS
  This case highlights the correlation of optic disc drusen and optociliary shunts which in diabetic patients can be misdiagnosed as neovascularization.
authors.affiliation: Moorfields Eye Hospital, London, UK. dimitrioskaragiannis@doctors.org.uk
authors.forename: D A
authors.initials: DA
authors.lastname: Karagiannis
authors.forename: V
authors.initials: V
authors.lastname: Sampat
authors.forename: Z
authors.initials: Z
authors.lastname: Gregor
mesh_terms: D003922:Diabetes Mellitus, Type 1 / Q000150:complications; D003930:Diabetic Retinopathy / Q000150:complications* / Q000473:pathology; D003937:Diagnosis, Differential; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D006801:Humans; D008297:Male; D008875:Middle Aged; D009898:Optic Disk / Q000098:blood supply*; D015594:Optic Disk Drusen / Q000150:complications* / Q000473:pathology; D015861:Retinal Neovascularization / Q000150:complications* / Q000473:pathology; D012171:Retinal Vessels / Q000002:abnormalities*