7.
The visual purple in retinal rods require and adequate supply of
vitamin
A.
A.
B.
C.
C.
D.
D.
E.
8.
Preparations for night flight do not include
A.
avoiding self-imposed stress.
B.
reducing normal levels of stress.
C.
allowing the eyes to adapt to reduced illumination conditions.
D.
understanding the requirement to centrally focus on distant
objects.
9.
Normally, the eyes will become unable to focus at usual reading
distances about the age of
A.
30.
B.
35.
C.
40.
D.
45.
10. Which of the following is not a limitation to vision created by
reductions in the amount of illumination?
A.
The
reduction in visual acuity.
B.
The
existence of a night blind spot.
C.
The
degradation of depth perception.
D.
The
inability of the eye to detect moving objects.
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