deficiency of vitamin A causes xerophthalmia but there can be other causes also. In this defect eye fails to produce tears because of dryness off cornea
vitamin A
xerophthalmia
defiency of vitamin a causes blindness.
Xerophthalmia is a condition due to a deficiency of vitamin A due to which the conjunctiva and cornea become dry.
xerophthalmia
Vitamin A
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The first sign of Vitamin A deficiency is night blindness. Severe Vitamin A deficiency can cause Xerophthalmia (dry eye in which the eyes cannot produce tears) and complete blindness.
xerophthalmia (noun) - abnormal dryness of conjunctiva and cornea of the eye, with inflammation and ridge formation, typically associated with vitamin A deficiency.
Rickets in children and osteomalacia are examples of deficiency diseases due to vitamin deficiency. Scurvy is an example of vitamin C deficiency. Beriberi is an example of vitamin B one deficiency. (Both, wet beriberi and dry beriberi.) Pellagra is an example of Niacin deficiency. Anemia is caused by deficiency of vitamin B 12 and Folic acid. Burning feet syndrome is caused by the deficiency of Pantothenic acid. Night blindness is caused by the deficiency of vitamin A. Kwashiorkor and marasmus are caused by deficiency of proteins and food, respectively. Poverty is caused by deficiency of kindness. Inequality is caused by deficiency of compassion.
Beriberi is caused by thiamine (vitamin B1) deficiency Goitre can be caused by iodine deficiency - although there are other potential causes. Scurvy is caused by vitamin C deficiency Night blindness (Nyctalopia) can have many different causes - but one cause is vitamin A deficiency.
Scurvy is caused by lack of vitamin C. I`m telling you EAT YOUR VITAMIN C.
There are quite a few deficiency diseases. Scurvy is caused by a vitamin C deficiency, Rickets is caused by a vitamin D deficiency, and Paresthesia is the from the lack of vitamin B5.