A nearsighted person wears contact lenses having a power of -0.15 diopters.What is the person's uncorrected far point?
A)1.5 m
B)3.3 m
C)6.0 m
D)6.7 m

Question

Quizplus · Accepted Answer

The power of the lens (P) is given by P = 1/f, where f is the focal length in meters. For a lens power of -0.15 diopters, f = -1/0.15 = -6.67 meters. The negative sign indicates that the far point is on the same side as the object, meaning the uncorrected far point is 6.7 meters.

A Nearsighted Person Wears Contact Lenses Having a Power of -0.15