title: Case report: association of combined nonarteritic anterior ischemic optic neuropathy (NAION) and obstruction of cilioretinal artery with overdose of Viagra.
abstract: OBJECTIVE
  We report on a case of combined nonarteritic anterior ischemic optic neuropathy (NAAION) and cilioretinal artery occlusion resulting from misuse of sildenafil citrate (Viagra Pfizer Pharmaceuticals, New York, NY).
  
  
  METHODS
  This is an observational case report.
  
  
  METHODS
  A 54-year-old white man developed blindness in his left eye after an overdose of Viagra. He was examined and fully evaluated.
  
  
  RESULTS
  Ocular examinations revealed a left relative afferent pupillary defect and a left combined NAAION and obstruction of the ipsilateral cilioretinal artery.
  
  
  CONCLUSIONS
  Although ocular side-effects of Viagra are rare, they are potentially blinding. Patients should be warned about the side-effects and against misuse of this agent.
authors.affiliation: Department of Ophthalmology, Chesterfield Royal Hospital, Calow, Chesterfield, United Kingdom. doc_akash2002@yahoo.co.uk
authors.forename: Raj
authors.initials: R
authors.lastname: Akash
authors.forename: Das
authors.initials: D
authors.lastname: Hrishikesh
authors.forename: Paul
authors.initials: P
authors.lastname: Amith
authors.forename: Stafanous
authors.initials: S
authors.lastname: Sabah
mesh_terms: D001766:Blindness / Q000139:chemically induced* / Q000150:complications; D062787:Drug Overdose; D006801:Humans; D008297:Male; D008875:Middle Aged; D018917:Optic Neuropathy, Ischemic / Q000139:chemically induced* / Q000150:complications; D010879:Piperazines / Q000008:administration & dosage / Q000009:adverse effects*; D011687:Purines; D015356:Retinal Artery Occlusion / Q000139:chemically induced* / Q000150:complications; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate