Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 36, Problem 5PL
Astigmatism results from a defect in the
a. control of the pupil size.
b. curvature of the cornea or lens.
c. rods of the retina
d. cones of the retina
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A 16 year old patient presents with a loss of vision in the left temporal visual field and the right nasal visual field. This patient has
a. Left optic tract
b. Midline optic chiasm
c. Left retina
d. Right visual cortex
When reading, a person with astigmatism sees some lines in sharp focus while others appear blurred. Astigmatism is caused by the
a. inability of the iris to contract or dilate
b. lens becoming cloudy and rigid
c. number of cones on some parts of the retina being deficient
d. curvature of the cornea or lens not being symmetrical
Hyperopia is a condition in which the eye cannot view close objects clearly. Many newborns have hyperopia. Compared to older adults, the lenses of a newborn baby are very light and flexible.
Hyperopia in newborn babies is caused by
a. the inability of the iris to adjust to changing light conditions
b. uneven curvature of the cornea
c. loss of lens flexibility
d. weak ciliary muscles that do not pull adequately on the lens
Chapter 36 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 36 - As a person ages, the elasticity of the lens a....Ch. 36 - Visual acuity is measured using a a. metric ruler....Ch. 36 - Color blindness is a characteristic in of males a....Ch. 36 - The blind spot is located at the of the eye. a....Ch. 36 - Astigmatism results from a defect in the a....Ch. 36 - Only males can inherit the color blindness...Ch. 36 - Nearsightedness is also called myopia. a. True...Ch. 36 - A convex lens can be used to correct hyperopia. a....Ch. 36 - Explain why small objects e not lost from our...Ch. 36 - Complete the following a. What is meant by 20/70...
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Visual Perception – How It Works; Author: simpleshow foundation;https://www.youtube.com/watch?v=DU3IiqUWGcU;License: Standard youtube license