Connect with Learnsmart Labs Access Anatomy & Physiology : An Integrative Approach
Connect with Learnsmart Labs Access Anatomy & Physiology : An Integrative Approach
2nd Edition
ISBN: 9781259657269
Author: Valerie Dean O'Loughlin, Theresa Stouter Bidle Michael P. McKinley
Publisher: Mcgraw-Hill
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Chapter 16, Problem 3CSL
Summary Introduction

To explain:

The difference between two conditions and why the treatment for both may appear to be similar.

Concept introduction:

The eye is the most sensitive organ of the body. It helps to provide vision. The eyewall is composed of three layers such as a fibrous tunic, vascular tunic, and retina tunic. Rods and cones cells are the receptor cells that provide clear vision.

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George is unclear why nearsighted persons may need bifocal eyeglasses (which have two lenses—one for reading and one for nearsightedness) when they get older. He does not understand why the same set of glasses wouldn’t work for both reading and the nearsighted correction. Can you explain to George the difference between the two conditions, and why the treatment for both may appear to be similar?
As a person ages, their ability to focus on near objects(accommodation) changes. If a person is already myopic(near-sighted), why would corrective lenses not benecessary to read a book or computer screen?
Compare the architecture of the fovea centralis with more peripheral regions of the retina. How does this architecture relate to visual acuity and sensitivity?

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Connect with Learnsmart Labs Access Anatomy & Physiology : An Integrative Approach

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