title: Decompensation of a congenital retinal macrovessel with arteriovenous communications induced by repetitive rollercoaster rides.
abstract: OBJECTIVE
  To describe a congenital retinal venous macrovessel that communicates with a cilioretinal artery and a retinal artery, and to report how this vascular anomaly decompensated as a result of repetitive rollercoaster rides.
  
  
  METHODS
  Case report with serial fundus photography and fluorescein angiography.
  
  
  RESULTS
  After a short period of intensive rollercoaster rides, a 19-year-old woman complained of reduced vision in one eye. Funduscopy and fluorescein angiography revealed a venous congenital retinal macrovessel with arteriovenous communications, and retinal exudation was visible at the termination of the anomalous vessel. Exudation resolved, and acuity recovered after a period of avoidance of rollercoaster rides.
  
  
  CONCLUSIONS
  This case represents the first report of a retinal artery and a cilioretinal artery communicating with a congenital retinal macrovessel, and it suggests that such patients are at increased risk of retinal vascular decompensation if involved in activities associated with changes in g-forces, such as bungee jumping or rollercoaster rides.
authors.affiliation: Manchester Royal Eye Hospital, London, United Kingdom.
authors.forename: S
authors.initials: S
authors.lastname: Beatty
authors.forename: K
authors.initials: K
authors.lastname: Goodall
authors.forename: R
authors.initials: R
authors.lastname: Radford
authors.forename: M J
authors.initials: MJ
authors.lastname: Lavin
mesh_terms: D000328:Adult; D001164:Arteriovenous Fistula / Q000175:diagnosis / Q000209:etiology*; D019842:Ciliary Arteries / Q000002:abnormalities* / Q000473:pathology; D005122:Exudates and Transudates; D005260:Female; D005451:Fluorescein Angiography; D005654:Fundus Oculi; D018470:Gravity, Altered / Q000009:adverse effects*; D006801:Humans; D007899:Leisure Activities; D012008:Recurrence; D012161:Retinal Artery / Q000002:abnormalities* / Q000473:pathology; D012169:Retinal Vein / Q000002:abnormalities* / Q000473:pathology; D014690:Venous Pressure; D014786:Vision Disorders / Q000209:etiology; D014792:Visual Acuity