REVIEW EXERCISE
REQUIREMENT: Complete the following by selecting the correct answers.
1.
The type of vision used for seeing during periods of low illumination
is
A.
mesopic vision.
B.
scotopic vision.
C.
photopic vision.
D.
presbyopic vision.
2.
The inability of the eye to contract to a required focal length is
called
A.
myopia.
B.
hyperopia.
C.
presbyopia.
D.
astigmatism.
3.
Vision during periods of low illumination uses
A.
only the fovea.
B.
principally cell cones.
C.
principally retinal rods.
D.
an equal amount of retinal rods and cell cones.
4.
The night blind spot
A.
is caused by the optic disc.
B.
increases in size with distance.
C.
cannot be eliminated (compensated for).
D.
is compensated for by the fact that we have two eyes.
5.
Linear perspective is the appearance that objects
A.
converge over distance.
B.
tend to look elliptical over distance.
C.
have motion even though they are stationary.
D.
tend to be higher in the field of vision over distance.
6.
A halo effect around ground lights indicates
A.
B.
the light is moving.
C.
the light is stationary.
D.
moisture in the air and possible ground fog.
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