A person suffering from the eye defect myopia can see clearly only up to a distance of 2 metres. What is the nature and power of lens required to rectify this defect?

A person suffering from myopia can use concave lens. Given, The far point of myopic eye = 2m Object distance, u = infinity Image distance, v = 2m 1/v-1/u=1/f f = -2m P = 1/f = 1/-2 = -0.5D