(a) What power contact lens is needed to correct the vision of a person who has a near point of 78.0 cm and allows him to see objects 25.0 cm away?

(b) If this person has a normal $8.00\%$ ability to accommodate (increase) the power of his eyes, what is the maximum distance of objects he can see clearly with his contact lenses and with totally relaxed eyes? (Assume a lens-to-retina distance of 2.00 cm. If he can see very distant objects clearly, enter 'infinity'.)

Answer rating: 100% (QA)

a Calculating the power of the contact lens The near point of the person is 780 cm which means this is the closest distance they can see objects clear... View the full answer