Deck 24: Special Senses: Visual Tests and Experiments

Question 1

Astigmatism .

A) literally means "old vision"
B) is a decline in visual acuity
C) results from irregular curvatures of the lens or cornea
D) results from a slight elongation of the eyeball

Answer 1

C

Question 2

Individuals who are nearsighted, or , see close objects clearly, but see distant objects as blurry.

A) hyperopic
B) emmetropic
C) myopic

Answer 2

C

Question 3

Binocular vision .

A) provides depth perception (three-dimensional vision)
B) is present in horses and rabbits
C) allows an animal to see in two different directions
D) provides a panoramic field of view

Answer 3

A

Question 4

The normal, or , eye accommodates properly.

A) hyperopic
B) emmetropic
C) myopic

Question 5

The image formed on the retina as light passes through the eye is reversed left to right, inverted, and smaller than the object. It is called a image.

A) refracted
B) real
C) reversed

Question 6

Color blindness is tested using _ .

A) a Snellen eye chart
B) a chart of lines radiating out from a white circle
C) sudden illumination of the retina
D) Ishihara plates

Question 7

Testing of these reflexes can provide information about cranial nerves that carry autonomic fibers.

A) convergence
B) photopupillary
C) photopupillary and accommodation pupillary
D) accommodation pupillary

Question 8

Many older individuals develop presbyopia, a condition in which _ .

A) the lens loses elasticity and can no longer focus for distant vision, and visual acuity declines
B) the near point of accommodation becomes further away
C) the lens loses elasticity and can no longer focus for distant vision
D) visual acuity declines

Question 9

This type of examination allows one to study the interior of the eyeball.

A) an examination using a rheostat
B) an ophthalmoscopic examination
C) visual observation
D) observation of the eyeball through a hand-held magnifying lens

Question 10

The results of a test of visual acuity are 20/15. This individual _.

A) needs glasses for nearsightedness
B) has better than normal vision
C) has normal vision
D) needs glasses for farsightedness

Question 11

In a person with myopia (nearsightedness), light from a distant object is brought to a focal point _.

A) on the retina
B) behind the retina
C) in front of the retina

Question 12

The three types of cone cells absorb _, , and wavelength of light.

A) red, blue, green
B) red, yellow, purple
C) red, yellow, blue
D) red, blue, yellow

Question 13

This reflex involves extrinsic eye muscles, and is controlled by the somatic nervous system.

A) photopupillary
B) convergence
C) accommodation pupillary