College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 25 - Vision and Optical Instruments - Learning Path Questions and Exercises - Multiple Choice Questions - Page 869: 2

Answer

(d) all of the preceding

Work Step by Step

Far-sightedness is the opposite of myopia. It is actually caused by shortening of the eyeball. Astigmatism is an imperfection of the cornea preventing part of it from focusing light onto the retina. The result is a blurred area within an otherwise clear image.
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