title: Blindness in Mentally Retarded Children. A survey of the causes of blindness in 201 notified patients.
abstract: A preliminary survey of the causes of blindness in mentally retarded children in Denmark showed that 50% of the children had optic atrophy, 12.5% had cataract while tapeto-retinal degenerations, other malformation and retrolental fibroplasia each represents 8-9% of the causes of blindness. The survey, was done through written notification and some patients with tapeto-retinal degenerations might have been wrongly diagnosed.
mesh_terms: D001766:Blindness / Q000453:epidemiology / Q000209:etiology*; D002386:Cataract / Q000150:complications; D002648:Child; D002825:Chorioretinitis / Q000150:complications; D003718:Denmark; D006801:Humans; D008607:Intellectual Disability / Q000150:complications*; D008850:Microphthalmos / Q000150:complications; D009896:Optic Atrophy / Q000150:complications; D012162:Retinal Degeneration / Q000150:complications; D012164:Retinal Diseases / Q000150:complications; D012178:Retinopathy of Prematurity / Q000150:complications