Aims-To determine the anatomical site and underlying causes of blindness and severe visual impairment in children under 16 years of age in special education in the People's Republic of China with a view to determining potentially preventable and treatable causes.
Methods-A national study of children attending schools for the blind in China was conducted between April and June 1998 using the WHO Prevention of Blindness Programme (WHOIPBL) eye examination record for children with blindness and low vision.
Eight Chinese ophthalmologists attended a training workshop before conducting the study. 36 blind schools in 18 provinces of China were included.
1245 children aged between 5 and 15 years were examined, of whom 1131 (91%) were blind or severely visually impaired (visual acuity less than 6/60 in the better eye).
The commonest anatomical sites of visual loss were whole globe (mainly microphthalmos) 25.5% and retina (mainly dystrophies) 24.9%. Lens was the major site in 18.8%, optic nerve in 13.6%, and glaucoma in 9%. Corneal scarring was not a major cause of visual loss.
The aetiology was unknown in 52.9%, hereditary factors were responsible in 30.7%, and childhood causes in 14%. 15% of cases were considered potentially preventable and 22.5% potentially treatable. (...)
Mots-clés Pascal : Cécité, Déficit, Acuité visuelle, Indice gravité, Etiologie, Chine, Asie, Enfant, Homme, Adolescent, Oeil pathologie, Trouble vision
Mots-clés Pascal anglais : Blindness, Deficiency, Visual acuity, Severity score, Etiology, China, Asia, Child, Human, Adolescent, Eye disease, Vision disorder
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0407578
Code Inist : 002B09K. Création : 22/03/2000.