chapter 19 visual fields

Question 1

The peripheral vision of a normal person is: a) 60 degrees temporal, 60 degrees inferior, 75 degrees nasal, and 95 degrees superior
b) 75 degrees temporal, 60 degrees inferior, 95 degrees nasal, and 60 degrees superior
c) 95 degrees temporal, 60 degrees inferior, 75 degrees nasal, and 60 degrees superior
d) 95 degrees temporal, 75 degrees inferior, 60 degrees nasal, and 60 degrees superior

Answer 1

d) 95 degrees temporal, 75 degrees inferior, 60 degrees nasal, and 60 degrees superior

Question 2

The anatomic pattern of the nerve fibers produces visual field defects:
a) that are total blind spots
b) that correspond to the location of the rods and cones
c) that correspond to the location of the nerve fibers
d) that respond well to treatment

Answer 2

c- that correspond to the location of the nerve fibers

Question 3

The “blind spot” as plotted on a visual field test corresponds to:
a ) the macula
b) the fovea
c) the optic disc
d) the angle

Answer 3

c- the optic disc

Question 4

On the visual field, the average blind spot is located:
a) 25 degrees temporal to fixation
b) 5 degrees nasal to fixation
c) 15 degrees nasal to fixation
d) 15 degrees temporal to fixation

Answer 4

d- 15 degrees temporal to fixation

Question 5

The Amsler grid is used to document visual field defects:
a) within the central 30 degrees
b) within the central 20 degrees
c) within the central 10 degrees
d) from 30 degrees outward

Answer 5

b- within the central 20 degrees

Question 6

What is the given assumption in confrontation field testing?
a) The patient has 20/20 vision.
b) The fields are tested in the central area.
c) The examiner’s field is normal.
d) The procedure is fully qualitative.

Answer 6

c- the examiner’s field is normal

Question 7

The confrontation field:
a) requires the use of elaborate equipment b) will not pick up gross visual field defects
c) can be performed on a patient in any position
d) cannot be performed on children

Answer 7

c- can be performed on a patient in any position

Question 8

The trial lens is used when testing:
a) the entire visual field
b) the central 30 degrees
c) the central 40 degrees
d) the peripheral field

Answer 8

b- the central 30 degrees

Question 9

Which of the following is true regarding visual field screening techniques?
a) they are difficult for patients because of the time required
b) they are not practical for evaluating large groups
c) the main purpose is to rule out pathology d) they cannot be used to confirm changes in prior fields

Answer 9

c- the main purpose is to rule out pathology

Question 10

If the patient has poor vision and cannot see the fixation target in the center of the automated perimeter:
a) activate an alternate/eccentric fixation pattern
b) turn off the fixation monitor
c) increase the size of the stimulus
d) use a +3.00 correcting lens to provide more magnification

Answer 10

a- activate an alternate/eccentric fixation pattern

Question 11

The visual field in a high hyperope will be:
a) compressed, with a blind spot closer to fixation than normal
b) expanded, with a blind spot farther from fixation than normal
c) compressed, with a smaller blind spot than normal d) expanded, with a larger blind spot than usual

Answer 11

a- compressed, with a blind spot closer to fixation than normal