Contact lenses are placed right on the eyeball, so the distance from the eye to an object (or image) is the same as the distance from the lens to that object (or image). A certain person can see distant objects well, but his near point is 45.0 cm from his eyes instead of the usual 25.0 cm.

(a) Is this per son nearsighted or farsighted?

(b) What type of lens (converging or diverging) is needed to correct his vision?

(c) If the correcting lenses will be contact lenses, what focal length lens is needed and what is its power in diopters?