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[Pathogenesis of severe vision deficiency in school-age children in Hungary]
1Humángenetikai és Teratológiai Osztály, Országos Közegészségügyi Intézet--WHO, Orökletes Artalmak Társadalmi Megelözése, Együttmüködési Központ, Budapest.
Insights
This study identified the causes of severe visual impairment in Hungarian children. Perinatal damage and genetic defects were the most frequent causes of vision loss in children aged 6-14.
Area of Science:
- Ophthalmology
- Pediatrics
- Genetics
Context:
- Severe visual impairment affects children's development and quality of life.
- Understanding the causes is crucial for prevention and intervention strategies.
- This study focuses on a population-based cohort in Hungary.
Purpose:
- To determine the etiological factors contributing to severe visual handicaps in children aged 6 to 14 years.
- To analyze the prevalence of different causes within this pediatric population.
- To identify potential risk factors associated with specific etiological groups.
Summary:
- A population-based study analyzed 491 children (aged 6-14) with severe visual impairment in Hungary.
- Eleven etiological groups were identified, including isolated cataracts, congenital eye abnormalities, high myopia, retinopathy of prematurity, and syndromes.
- Perinatal damage syndrome and Mendelian monogenic defects were the most common causes, with a noted higher rate of induced abortions in the retinopathy of prematurity group.
Impact:
- Provides essential data on the epidemiology of childhood visual impairment in Hungary.
- Highlights the significant role of perinatal factors and genetic defects in severe vision loss.
- Informs public health initiatives and clinical management for visually impaired children.
Abstract:
A population-based aetiological study was carried out on 6 to 14 year-old severely visually handicapped children in Hungary. Of the 547 recorded cases 491 (90%) were included in the analysis. Eleven aetiological groups were separated: isolated cataracts (16.7%), congenital abnormalities of the eye (15.1%), high myopia +/- retinal detachment and other cases (13.4%), retinopathia praematurorum (11.0%), choroidoretinal degenerations (10.0%), syndromes (9.6%), nystagmus and/or hypermetropia (9.0%), isolated and complicated optic atrophy (6.7%), postnatal causes (4.9%), retinoblastoma (1.8%), praenatal causes (1.8%). A significantly higher rate of previous induced abortions was found in the group of retinopathia praematurorum. Perinatal damage syndrome and Mendelian monogenic defects are the two most common aetiological categories in the origin of severe visual handicaps in Hungary.