COT Flashcards : Visual Field Testing 3%

Question 1

The visual field defect in which there is a complete type of nerve fiber bundle defect emanating from the blind spot, arching over central fixation, and ending on the horizontal line is a

a. Absolute scotoma
b. Bjerrum scotoma
c. Contraction
d. Relative scotoma

Answer 1

b. Bjerrum scotoma

Question 2

Homonymous congruous visual field defects with macular sparing are located in what part of the visual pathway?

a. Occipital cortex
b. Optic chiasm
c. Optic nerve
d. Optic radiation

Answer 2

a. Occipital cortex

Question 3

The normal visual field is determined by the size of the test object employed and the distance at which the test was made. With a 3mm white target on the perimeter of a 330-degree radius, the average peripheral limit is about

a. 75 degrees outward, 55 degrees downward, 40 degrees inward and 40 degrees upward
b. 85 degrees outward, 65 degrees downward, 50 degrees inward and 50 degrees upward
c. 95 degrees outward, 75 degrees downward, 60 degrees inward and 60 degrees upward
d. 105 degrees outward, 85 degrees downward, 70 degrees inward and 40 degrees upward

Answer 3

c. 95 degrees outward, 75 degrees downward, 60 degrees inward and 60 degrees upward

Question 4

What type of patient generally requires a threshold 24-degree central field test?

a. Cataract
b. Diplopia
c. Glaucoma
d. Low vision

Answer 4

c. Glaucoma

Question 5

The MOST widely used method of visual field screening, requiring no special equipment, is

a. Goldmann perimetry
b. The tangent screen
c. Amsler grid
d. Confrontation testing

Answer 5

d. Confrontation testing

Question 6

Scotoma located immediately nasal or temporal to fixation are known as

a. Central
b. Paracentral
c. Arcuate
d. nasal step

Answer 6

b. Paracentral