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.
What is Vitamin A Deficiency. The foremost answer to the question what is vitamin A good for, is to improve vision. Therefore, lack of vitamin A in one's diet can lead to poor vision. The diseases caused by lack of a particular vitamin / nutrient in the diet are known as deficiency diseases.