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Main harms caused by the vitamin A deficiency

Write down the main harms caused by the vitamin A deficiency? How does this vitamin take action in physiology of vision?

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Deficiency of the vitamin A (retinol) might cause corneal dryness (xerophthalmia), night blindness and predisposition to skin harms.
In physiology of vision, vitamin A participates in formation of the rhodopsin, a pigment accountable for visual perception in less illuminated places.
Nutrition Vitamins - Image Diversity- vitamin A deficiency

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