Related Experiment Videos
Prevalence of lens changes in Ukrainian children residing around Chernobyl
1Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, PA 15261, USA.
Insights
This study examined Chernobyl-exposed children (5-17 y) for lens changes. A small excess of posterior subcapsular lens changes was found in the exposed group, particularly in older boys and mushroom consumers.
Area of Science:
- Ophthalmology
- Radiation Epidemiology
- Pediatric Health
Background:
- Children living near the Chernobyl nuclear reactor may be at risk for radiation-induced health effects.
- Lens changes, such as cataracts, are known radiation effects.
Purpose of the Study:
- To determine the prevalence and characteristics of lens changes in Chernobyl-exposed children (5-17 years old).
- To compare lens findings in exposed children with an unexposed control group.
Main Methods:
- Ophthalmic examination of 1,787 children (996 exposed, 791 unexposed) living in the Chernobyl control zone.
- Analysis of lens changes, including focal lens defects and posterior subcapsular changes.
- Statistical comparison between exposed and unexposed populations.
Main Results:
- Over 75% of all subjects exhibited minor focal lens defects.
- A statistically significant excess (3.6%) of subclinical posterior subcapsular lens changes was observed in the exposed group (p = 0.0005).
- These changes were more common in exposed boys aged 12-17 and those regularly consuming local mushrooms.
Conclusions:
- While minor lens defects are common, Chernobyl exposure is associated with a small but significant increase in posterior subcapsular lens changes in children.
- Risk factors include age (adolescent boys) and consumption of locally grown mushrooms.
- Further research is warranted to understand the long-term implications and mechanisms.
Abstract:
The objective of this study is to determine the prevalence and characteristics of lens changes in the eyes of a pediatric population, 5-17 y old, living in the permanent control zone around the Chernobyl nuclear reactor and to compare these findings with those from an unexposed control population. A total of 1,787 children are reported on (996 exposed and 791 unexposed). Over three-quarters of the subjects examined in this study show a form of minor change, termed focal lens defect, in the cortical and/or nuclear portions of the lens of the eye. The exposed group shows a small (3.6%), but statistically significant excess (p = 0.0005) of subclinical posterior subcapsular lens changes similar in form to changes identified in atomic bomb survivors. These posterior subcapsular changes tend to occur in boys 12-17 y old and in exposed children who report consuming locally grown mushrooms on a regular basis.