Deck 30: Physiology of the Eye

Question 1

What is the process by which the eye lens changes shape to focus light on the retina?

A) astigmatism
B) visual acuity
C) accommodation
D) none of the above

Answer 1

C

Question 2

Which of the following areas of the retina is the blind spot?

A) optic disk
B) rods and cones
C) macula lutae
D) fovea

Answer 2

A

Question 3

An astigmatism test chart has how many sets of three lines laid out in a circular arrangement?

A) 14
B) 12
C) 10
D) 11

Answer 3

B

Question 4

An eye that focuses an image behind the retina is ________.

A) nearsighted
B) hyperopic
C) myopic
D) none of the above

Question 5

What is the only sense that requires alteration and adjustment of the stimulus before it strikes the receptors?

A) sight
B) taste
C) smell
D) hearing

Question 6

What are the jumping eye motions that occur when a person is reading or looking out the window of a moving car?

A) saccades
B) EOG
C) voluntary fixation
D) none of the above

Question 7

What tool is used to measure visual acuity?

A) ophthalmoscope
B) astigmatism test chart
C) Snellen eye chart
D) none of the above

Question 8

What is the normal visual acuity?

A) 20/40
B) 20/30
C) 20/20
D) none of the above

Question 9

In order to see objects farther than 20 feet away the lens ________.

A) bulges
B) flattens
C) doesn't change
D) none of the above

Question 10

A tool that records voltage changes that occur as eye position changes is called an ________.

A) EEG
B) EOG
C) EMG
D) ECG

Question 11

A reduction in sharpness of vision due to an irregularly shaped cornea or lens is called ________.

A) myopic
B) hyperopic
C) emmetropic
D) astigmatism

Question 12

A form of farsightedness that forms due to aging is called ________.

A) emmetropic
B) myopia
C) presbyopia
D) astigmatism

Question 13

The process by which the eye lens changes shape to focus light on the retina is called ________.

A) accommodation
B) hyperopic
C) myopic
D) astigmatism

Question 14

What is the area of the eye with the greatest acuity?

A) fovea
B) macula lutea
C) optic disk
D) lens