1 A mathematical determination of the amount or number of something: finding ways of saving money involves complicated calculations [mass noun]: the calculation of depreciation. More example sentences. Synonyms. 1  Precise mathematical calculations are worked out and this determines how a person's life is affected.
A vitamin A deficiency can lead to a vision condition called, Keratomalacia. Symptoms of this condition include: night blindness, dry eyes (often extreme cases), blurred or clouded vision, and softening of the cornea.
Dry Eyes From a Vitamin A Deficiency. Close-up of a man's dry eye. Photo Credit cesaria1/iStock/Getty Images. The front of your eye has a clear lubrication that coats the surface, and this substance, called the tear film, nourishes and protects your eye.If your eyes do not make the right amount of tears, or if you make tears of a poor quality, you may have dry eye.This condition causes surface irritation, redness and episodes of blurry vision. Certain conditions, such as low vitamin A levels, may increase your risk for dry eye problems.ther Effects. In addition to dry eye problems, a vitamin A deficiency may result in other conditions. A severe or long-term deficiency may result in vision changes, including blindness, particularly in children.