Surgical Vision CorrectionLight that enters your eyes is

Chapter 19, Problem 58PP

(choose chapter or problem)

Problem 58PP

Surgical Vision Correction

Light that enters your eyes is focused to form an image on your retina. The optics of your visual system have a total refractive power of about +60 D—about +20 D from the lens in your eye and +40 D from the curved shape of your cornea. Surgical procedures to correct vision generally do not work on the lens; they work to reshape the cornea. In the most common procedure, a laser is used to remove tissue from the center of the cornea, reducing its curvature. This change in shape can correct certain kinds of vision problems.

Flattening the cornea would be a good solution for someone who was

A. Nearsighted.

B. Farsighted.

C. Either nearsighted or farsighted.