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An aetiological study on 6 to 14 years-old children with severe visual handicap in Hungary
1Department of Human Genetics and Teratology, WHO Collaborating Centre for the Community Control of Hereditary Diseases, Budapest, Hungary.
Insights
This study identified causes of severe visual impairment in Hungarian children (ages 6-14). Perinatal damage syndrome and Mendelian monogenic defects were the most frequent causes, with retinopathy of prematurity linked to induced abortions.
Area of Science:
- Ophthalmology
- Pediatrics
- Genetics
Background:
- Severe visual impairment significantly impacts child development.
- Understanding the etiology of visual handicaps is crucial for prevention and intervention strategies.
Purpose of the Study:
- To conduct a population-based etiological study of severe visual handicaps in children aged 6 to 14 years in Hungary.
- To identify the main etiological categories contributing to severe visual impairment in this pediatric population.
Main Methods:
- A population-based study analyzed 491 children (aged 6-14) with severe visual handicaps in Hungary.
- Etiologies were categorized into eleven distinct groups, including congenital abnormalities, retinopathy of prematurity, and genetic defects.
Main Results:
- The most common etiological groups were isolated cataracts (16.7%), congenital abnormalities (15.1%), and high myopia (13.4%).
- Perinatal damage syndrome and Mendelian monogenic defects were identified as the leading causes of severe visual handicaps.
- A higher incidence of previous induced abortions was noted in children with retinopathy of prematurity.
Conclusions:
- Perinatal damage and Mendelian monogenic defects are the primary drivers of severe visual impairment in Hungarian children.
- The findings highlight the importance of addressing prenatal and perinatal factors in preventing childhood visual disabilities.
Abstract:
A population-based aetiological study was carried out on 6 to 14 years-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%), retinopathy of premature (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%), prenatal causes (1.8%). A significantly higher rate of previous induced abortions was found in the group of retinopathy of premature. Perinatal damage syndrome and Mendelian monogenic defects are the two most common aetiological categories in the origin of severe visual handicaps in Hungary.