Visual Tests and Demonstrations

Part A

1. Visual acuity test results: Eye Tested Acuity Values

Right eye

Right eye with glasses (if applicable)

Left eye

Left eye with glasses (if applicable)

2. Astigmatism test results: Eye Tested Darker Lines

Right eye

Right eye with glasses (if applicable)

Left eye

Left eye with glasses (if applicable)

Martin: Human Anatomy 1 36. Visual Tests and and Physiology Demonstrations

1 Text

1 © The McGraw-Hill 1 Companies, 2002

3. Accommodation test results: Eye Tested

Near Point (cm)

Right eye

Right eye with glasses (if applicable)

Left eye

Left eye with glasses (if applicable)

4. Color vision test results:

Males

Females

Condition

Class Number

Class Percentage

Expected Percentage

Class Number

Class Percentage

Expected Percentage

Normal color vision

93

99.6

Deficient red-green color vision

7

0.4

Protanopia (lack red-sensitive cones)

less-frequent type

less-frequent type

Deuteranopia (lack green-sensitive cones)

more-frequent type

more-frequent type

5. Complete the following:

a. What is meant by 20/70 vision?

b. What is meant by 20/10 vision?

c. What visual problem is created by astigmatism?

d. Why does the near point of accommodation often increase with age?

e. Describe the eye defect that causes color-deficient vision.

Part B

1. Blind-spot results:

a. Right eye distance_

b. Left eye distance_

Complete the following:

2. Explain why an eye has a blind spot.

3. Describe the photopupillary reflex.

4. What difference did you note in the size of the pupils when one eye was exposed to bright light and the other eye was shielded from the light? _

5. Describe the accommodation pupillary reflex.

6. Describe the convergence reflex.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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