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.
Vitamin A Deficiency. Although not extremely common in the United States, a deficiency of vitamin A in the diet can have a significant effect on the body; vitamin A deficiency is associated with xerophthalmia, or dry eyes, and is also characterized by an increase in night blindness and can even lead to overall blindness.