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.
1 Vitamin A and beta-carotene-necessary for night vision. 2  Vitamin B complex-the B complex vitamins may help prevent high homocysteine levels developing in the blood. 3  These are associated with vascular problems that affect the retina.4  Vitamin C-may reduce the risk of cataracts. Vitamin A and beta-carotene-necessary for night vision. 2  Vitamin B complex-the B complex vitamins may help prevent high homocysteine levels developing in the blood. 3  These are associated with vascular problems that affect the retina.