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Vitamin A deficiency disorders
1International Centre of Eye Health, Institute of Ophthalmology, London.
Journal of the Indian Medical Association
|January 22, 2000
Summary
Vitamin A deficiency disorders (VADD) cause childhood blindness and mortality globally. Prevention strategies like supplementation and food fortification are crucial for public health, though treatment access remains a challenge.
Area of Science:
- Public Health
- Nutrition
- Ophthalmology
Background:
- Xerophthalmia, stemming from vitamin A deficiency, is a leading cause of childhood blindness worldwide.
- Vitamin A deficiency disorders (VADD) encompass a spectrum of clinical effects, including increased mortality.
- Existing classification and prevalence criteria aid in identifying VADD as a public health concern.
Purpose of the Study:
- To review the global prevalence and public health impact of VADD.
- To discuss the limitations in current treatment accessibility for VADD.
- To evaluate various prevention strategies for VADD, including supplementation, food fortification, infection control, and dietary improvements.
Main Methods:
- Review of global prevalence data on VADD.
- Analysis of established treatment protocols for xerophthalmia.
- Discussion of advantages and disadvantages of different prevention methods.
Main Results:
- Global prevalence of VADD is well-documented, with ongoing data collection by the WHO.
- Treatment for established VADD cases is available, but concentrated vitamin A sources are often scarce in clinical settings.
- Prevention methods such as high-dose supplementation, food fortification, infection control, and dietary enhancement are key.
Conclusions:
- While treatment exists, prevention is paramount for combating VADD.
- A multi-faceted approach combining supplementation, fortification, infection control, and dietary improvements is necessary.
- Further research into VADD pathogenesis may elucidate why some individuals are more susceptible.