1) a) What power correction lens is needed to correct the vision of a farsighted eye that has a near point of 75cm to enable the person to clearly see objects that are 25 cm in front of the eye. Express your answer in diopters.
b) What correction lens is needed for a nearsighted eye that has a far-point of 275cm? Express your answer in diopters.
c) A myopic person uses a -0.658 diopters lens. What is the far-point for the eye of that person? Express the answer in cm.