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" Another vital role of vitamin A concerns the formation, maintenance, and growth of skin, which forms the body's primary barrier to infection.Vitamin A has several important functions in the body, including the maintenance of proper vision.. Carlson Vitamin A Palmitate 15000 IU - 240 Softgels When the body is deficient in Vitamin A, the eye gradually loses its ability to adapt to changes in light resulting in "Night Blindness.