Vitamin A Deficiency Vitamin A Deficiency: What You Need to Know. Vitamin A deficiency can result a diet low in vitamin A or absorption of liver disorder which can easily leads for the following signs and symptoms. • The first sign and symptoms of Vitamin A deficiency is night blindness. • During Vitamin A deficiency Blindness may ultimately occur. • Infections are more likely to arise, and the eyes, skin, and other tissues become damaged and dried up. • Blood tests and the symptoms are used to make the diagnosis. • The deficiency can be resolved by taking high dosages of vitamin A for several days. Vitamin A (rational) is essential for the photoreceptors in the retina of the eye to operate properly and maintaining night vision in this way. It also works to prevent infections and maintain the health of the skin, lungs, intestines, and urinary tract lining. Fish liver oils, liver, egg yolks, butter, cream, and calcium - fortified are all excellent sources of vitamin A. Vegetables ...