To accommodate near and distant focus,the lens changes shape and focus by relaxation and tightening of the zonular fibers.What physiologic change of the normal aging process is typically corrected with bifocals?
A) Cataracts
B) Presbyopia
C) Glaucoma
D) Astigmatism

Question

Quizplus · Accepted Answer

Over time (particularly after age 40),the lens and lens zonules becomes progressively less elastic,resulting in presbyopia.This loss of accommodative power is typically corrected by reading glasses or bifocals.

To Accommodate near and Distant Focus,the Lens Changes Shape and Focus