GK
VITAMINS MINERALS COENZYMES AND DEFICIENCY DISEASES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Vitamin A
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Vitamin B
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Vitamin C
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Vitamin D
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Detailed explanation-1: -Night blindness is one of the first signs of vitamin A deficiency. In its more severe forms, vitamin A deficiency contributes to blindness by making the cornea very dry, thus damaging the retina and cornea.
Detailed explanation-2: -Vitamin A deficiency in the blood and tissues is the main cause of night blindness.
Detailed explanation-3: -Vitamin A plays an important role in your vision. To see the full spectrum of light, your eye needs to produce certain pigments for your retina to work properly. Vitamin A deficiency stops the production of these pigments, leading to night blindness.
Detailed explanation-4: -Concentrations of preformed vitamin A are highest in liver, fish, eggs, and dairy products [1]. Most dietary provitamin A in the U.S. diet comes from leafy green vegetables, orange and yellow vegetables, tomato products, fruits, and some vegetable oils [1, 5, 10].