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

Question

Quizplus · Accepted Answer

The far point of a nearsighted person can be calculated using the formula 1/f = P, where f is the focal length in meters and P is the power in diopters. For a power of -0.15 diopters, 1/f = -0.15, so f = -1/0.15 = -6.67 meters. The negative sign indicates that the focus is on the same side as the light source, which is typical for nearsightedness. Therefore, the uncorrected far point is approximately 6.7 meters.

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