Amit is a domestic help (or maid) working at Mr Dave's house. One day Amit complained to Mr Dave that he had difficulty in reading the letter which he had received from his parents. Mr Dave, realising that Amit had an eye defect, took him to an eye specialist doctor. The doctor tested his eyes carefully and told Amit to wear spectacles containing certain type of lenses having specified power. Mr Dave bought the required spectacles for Amit. By wearing this spectacle, Amit could read and write easily. He was very happy and thanked Mr Dave.
What could be the two possible reasons responsible for his eye defect? What type of lenses do you think the doctor recommended for Amit's spectacles ?

Explanation

(a) Low converging power of the eye lens (because of the eye lens being less convex or less thick)
(b ) Eyeball being too small (flat) (because of which the distance of the retina from the eye lens is less than normal).
The doctor recommended convex lenses for the spectacles of Amit.