title: Visual impairment due to retinopathy of prematurity in Nordic children.
abstract: The registers of visually impaired children in Denmark, Finland, Iceland and Norway have been compiled into a common database by a Nordic study group of ophthalmologists, NORDSYN. The database contains information on 2527 children aged 0-17 years. The total number of children with visual impairment due to retinopathy of prematurity (ROP) is 247. ROP is the 3rd most common single diagnosis in the database. The age-specific national prevalence of registration (N/100 000) of visual impairment due to ROP varies from 12 in Denmark to 5 in Finland and Norway and 4 in Iceland. The differences can partly be explained by varying efficiency of registration. The age-distribution indicates that visual impairment due to ROP is not decreasing. Of the 247 children 175 had a visual acuity less than 1/60 and 58 had one or more additional impairments. Incidence studies on visual impairment in Nordic children are being prepared.
authors.affiliation: Norwegian Registry of Blindness, National Hospital, University of Oslo.
authors.forename: R
authors.initials: R
authors.lastname: Riise
authors.forename: T
authors.initials: T
authors.lastname: Flage
authors.forename: E
authors.initials: E
authors.lastname: Hansen
authors.forename: T
authors.initials: T
authors.lastname: Rosenberg
authors.forename: S L
authors.initials: SL
authors.lastname: Rudanko
authors.forename: G
authors.initials: G
authors.lastname: Viggosson
mesh_terms: D000293:Adolescent; D001766:Blindness / Q000453:epidemiology / Q000209:etiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D015995:Prevalence; D012042:Registries; D012178:Retinopathy of Prematurity / Q000150:complications* / Q000453:epidemiology; D012537:Scandinavian and Nordic Countries / Q000453:epidemiology; D014786:Vision Disorders / Q000453:epidemiology / Q000209:etiology*; D014792:Visual Acuity