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Published on: September 20, 2018
Measles blindness
Richard D Semba1, Martin W Bloem
1Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. rdsemba@jhmi.edu
Abstract:
Measles remains a major problem in developing countries, where it affects an estimated 30 million children a year and causes up to one million deaths annually. Measles blindness is the single leading cause of blindness among children in low income countries, accounting for an estimated 15,000 to 60,000 cases of blindness per year. There is a close synergism between measles and vitamin A deficiency that can result in xerophthalmia, with corneal ulceration, keratomalacia, and subsequent corneal scarring or phthisis bulbi. High-dose oral vitamin A supplementation is recommended for all children with measles in developing countries. Higher measles immunization coverage to interrupt measles transmission and interventions aimed at improving vitamin A nutriture of children are the main strategies to prevent measles blindness.
Insights
Measles causes significant childhood blindness in developing nations. Vitamin A supplementation and increased measles vaccination are key strategies to prevent vision loss in affected children.
Area of Science:
- Ophthalmology
- Public Health
- Pediatrics
Background:
- Measles affects 30 million children annually in developing countries, causing up to one million deaths.
- Measles is the leading cause of childhood blindness in low-income countries, with 15,000-60,000 new cases yearly.
- Measles synergizes with vitamin A deficiency, leading to xerophthalmia, corneal ulceration, and irreversible vision loss.
Purpose of the Study:
- To highlight the link between measles, vitamin A deficiency, and childhood blindness.
- To emphasize the importance of vitamin A supplementation and measles immunization in preventing blindness.
Main Methods:
- Review of existing literature on measles, vitamin A deficiency, and childhood blindness.
- Analysis of epidemiological data on measles incidence and blindness prevalence.
Main Results:
- Measles is a primary cause of preventable blindness in children globally.
- Vitamin A deficiency exacerbates measles complications, increasing the risk of corneal damage.
- High-dose vitamin A supplementation is a critical intervention for measles patients.
Conclusions:
- Preventing measles blindness requires a dual approach: increasing measles immunization coverage and improving vitamin A status in children.
- Early vitamin A supplementation for children with measles can mitigate severe visual impairment and blindness.
- Public health strategies must address both measles transmission and nutritional deficiencies to combat childhood blindness.
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