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Authors
Y. Alwin Jayakumar
Regional Research Laboratory Council for Scientific and Industrial Research, Trivandrum 695 019, India
Y. S. Sivan
Regional Research Laboratory Council for Scientific and Industrial Research, Trivandrum 695 019, India
C. Arumughan
Regional Research Laboratory Council for Scientific and Industrial Research, Trivandrum 695 019, India
A. Sundaresan
Regional Research Laboratory Council for Scientific and Industrial Research, Trivandrum 695 019, India
C. Balachandran
Regional Research Laboratory Council for Scientific and Industrial Research, Trivandrum 695 019, India
Joseph Job
Regional Research Laboratory Council for Scientific and Industrial Research, Trivandrum 695 019, India
S. S. Deepa
Regional Research Laboratory Council for Scientific and Industrial Research, Trivandrum 695 019, India
S. L. Shahina
Regional Research Laboratory Council for Scientific and Industrial Research, Trivandrum 695 019, India
C. R. Soman
Regional Research Laboratory Council of Scientific & Industrial Research, Trivandrum 695 019, India
V. Raman Kutty
Health Action by People, Pettah, Trivandrum 695 024, India
P. Sankara Sarma
Achutha Menon Centre for Health Science Studies (Sri Chitra Tirunal Institute for Medical Sciences and Technology), Trivandrum 695 011, India
Abstract
Vitamin A deficiency is a major nutritional deficiency in third world countries such as Malawi, Sudan, Tanzania, Zambia, Indonesia, India and Nepal. It is prevalent in many Indian States such as Tamil Nadu, Andhra Pradesh, Karnataka, Bihar and West Bengal. It is the result of insufficient - quantitative and/or qualitative - intake of food and therefore, is an example for social and economic deprivation affecting health. The most dangerous health consequence of vitamin A deficiency is blindness: deficiency affects the corneal epithelium leading ultimately to keratomalacia and opacities. But long before such manifestation become obvious, there are warning signs such as dryness of the conjunctiva (xerosis), Bitot's spots, etc.