title: The changing visual profile of children attending a regional specialist school for the visually impaired in Northern Ireland.
abstract: OBJECTIVE
  To investigate the changing profile of children attending a special school for visually impaired children over a 30-year period.
  
  
  METHODS
  Between 1975 and 2004, 266 children were identified as having been students in the introductory years to secondary education at Jordanstown School. School records and records from the Regional Paediatric Low Vision Clinic at the Royal Victoria Hospital, Belfast were examined to obtain data regarding age, primary ophthalmic diagnosis, visual acuity and any additional impairment.
  
  
  RESULTS
  There was no statistically significant change in mean visual acuity of the children entering the secondary school over this period (p > 0.1). Albinism was the most common single condition (20.3%). Notable also was the reduction in incidence of visual impairment following congenital glaucoma and cataract and the corresponding increase in cortical visual impairment (CVI) during this period.
  
  
  CONCLUSIONS
  During the last 30 years medical/surgical treatment has reduced the impact of treatable conditions (e.g. cataract) on visual impairment to the extent that their prevalence within this school has decreased. Consequently, children with non-treatable conditions (e.g. albinism) constitute a larger proportion of the school population. An increase in the proportion of children with CVI and learning disability in the school was noted.
authors.affiliation: Vision Science Research Group, School of Biomedical Sciences, University of Ulster, Coleraine, Co. Londonderry BT52 1SA, UK. jf.mcclelland@ulster.ac.uk
authors.forename: Julie
authors.initials: J
authors.lastname: McClelland
authors.forename: Kathryn J
authors.initials: KJ
authors.lastname: Saunders
authors.forename: Nan
authors.initials: N
authors.lastname: Hill
authors.forename: Anne
authors.initials: A
authors.lastname: Magee
authors.forename: Myrtle
authors.initials: M
authors.lastname: Shannon
authors.forename: A Jonathan
authors.initials: AJ
authors.lastname: Jackson
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004519:Education, Special; D006306:Health Surveys; D006801:Humans; D009660:Northern Ireland / Q000453:epidemiology; D012720:Severity of Illness Index; D014786:Vision Disorders / Q000453:epidemiology* / Q000534:rehabilitation; D014792:Visual Acuity; D019987:Persons with Visual Disabilities / Q000534:rehabilitation / Q000706:statistics & numerical data*