title: Visual loss and idiopathic intracranial hypertension in children with Alagille syndrome.
abstract: BACKGROUND
  Alagille syndrome (AGS) is an autosomal dominant, multisystem disorder defined by developmental abnormalities of the liver, heart, eye and skeleton. Although visual problems are recognised, the severity of visual loss and its link with idiopathic intracranial hypertension (IIH) has not been reported.
  
  
  OBJECTIVE
  To review the incidence of visual loss and IIH in children with AGS managed at a National Paediatric Liver Unit between 1989 and 2004.
  
  
  METHODS
  Retrospective case note review of children who fulfilled criteria for diagnosis of AGS and had an ophthalmic examination by a paediatric ophthalmologist.
  
  
  RESULTS
  Fifty-five children with AGS were evaluated. Of these, 41 children fulfilled diagnostic criteria and had a documented ophthalmic examination. Six children had undergone liver transplantation. Three children had a definite diagnosis of IIH, 2 of whom developed postliver transplant. All 3 were treated medically, but 1 child with IIH required lumboperitoneal shunting. All 3 children with definite IIH have normal vision after treatment. Another child with probable undiagnosed IIH has bilateral optic atrophy and is registered blind. Two children with AGS are registered partially sighted, one with rod cone dystrophy and the other with pigmentary retinopathy and right disc atrophy.
  
  
  CONCLUSIONS
  Although visual abnormalities are well described in children with AGS, a minority of children have significant progressive visual loss. Idiopathic intracranial hypertension has been identified as a potentially treatable precipitating factor.
  
  
  CONCLUSIONS
  We recommend annual fundoscopy in the follow-up of children with AGS to facilitate early detection and appropriate management of IIH to prevent visual loss.
authors.affiliation: Liver Unit, Birmingham Children's Hospital, Birmingham, UK.
authors.forename: Priya
authors.initials: P
authors.lastname: Narula
authors.forename: Joanne
authors.initials: J
authors.lastname: Gifford
authors.forename: Margaret A
authors.initials: MA
authors.lastname: Steggall
authors.forename: Carla
authors.initials: C
authors.lastname: Lloyd
authors.forename: Indra D M
authors.initials: ID
authors.lastname: Van Mourik
authors.forename: Patrick J
authors.initials: PJ
authors.lastname: Mckiernan
authors.forename: Harry E
authors.initials: HE
authors.lastname: Willshaw
authors.forename: Deirdre
authors.initials: D
authors.lastname: Kelly
mesh_terms: D016738:Alagille Syndrome / Q000150:complications* / Q000628:therapy; D001766:Blindness / Q000150:complications* / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D019586:Intracranial Hypertension / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology; D016031:Liver Transplantation; D008297:Male; D012189:Retrospective Studies; D014815:Vitamins / Q000097:blood
chemical_list: D014815:Vitamins