The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?

Explanation

Give values
Corrective lens required is Concave
Distance of far object=80cm
To view the distance correctly, the focal length needed is =-80
Power of lens=1/f=1/-80=-1.25D
(Power of corrective convex lens is positive and convex lens is neagative)