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.
Decreased vision due to vitamin deficiencyâHeavy drinking affects the absorption of vitamins in the liver, vitamins needed to maintain healthy eyesight. For example, a vitamin B-1 deficiency due to alcohol consumption can cause a weakness or paralysis of the eye muscles. Or a vitamin A deficiency due to alcoholism can cause: night blindness, thinning of the cornea, corneal perforation, dryness, and even blindness due to retinal damage.