Part A Modified True/False
Indicate whether the sentence or statement is true or false.
If false, change the identified word or phrase to make the sentence
or statement true.
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1. |
The image on your retina is upside
down and reversed.
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2. |
Vision defects are known as reflective
vision problems.
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3. |
A person with myopia can see
distant objects clearly but cannot focus on nearby objects.
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4. |
Shining light through green and
blue filters produces the colour white.
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5. |
Your cones can only detect the primary
light colours.
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Part B Completion
Complete each sentence or statement.
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6. |
Laser surgery modifies the shape of the ____________________.
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7. |
Experts believe the decrease in the
length of daylight causes changes in the amount of the hormones serotonin
and ____________________.
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Part C Multiple Choice
Identify the letter of the choice that best completes the
statement or answers the question.
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8. |
Which part(s) of the eye are sensitive
to the level of light?
a. |
rods |
c. |
optic nerve |
b. |
cones |
d. |
sclera |
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9. |
The part of the eye that is similar
to the diaphragm of a camera or a microscope is the
a. |
pupil |
c. |
retina |
b. |
iris |
d. |
ciliary muscle |
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10. |
Which of the following are the light
receptor cells of the eye?
a. |
pupil and iris |
c. |
rods and cones |
b. |
iris and retina |
d. |
cornea and lens |
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11. |
When the focal point occurs in front
of the retina a person has
a. |
myopia |
c. |
hyperopia |
b. |
presbyopia |
d. |
astigmatism |
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12. |
Hyperopia can be corrected with
a. |
a concave lens |
c. |
a lens implant |
b. |
a convex lens |
d. |
retinal implant |
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13. |
Which of the following combinations
will produce a magenta colour?
a. |
green and red |
c. |
blue and red |
b. |
green and blue |
d. |
all of the above |
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14. |
A person does not need glasses to
play sports but does need them to read. What refractive vision problem
is most likely?
a. |
hyperopia |
c. |
astigmatism |
b. |
myopia |
d. |
presbyopia |
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15. |
What would be the best location to
build a telescope to view stars?
a. |
at sea level |
c. |
in a desert at sea level |
b. |
below sea level |
d. |
on a mountain |
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Part D Short Answer
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16. |
When you come into a dark room after
being out in the bright sunlight you often have difficulty seeing for
a short time. Explain why this happens and what happens to allow you
to see properly.
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17. |
Why are the most common vision problems
called refractive vision problems?
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18. |
Give the complementary colours for
the following colours:
red
green
yellow
blue
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19. |
A television screen is made of three
different coloured pixels that glow when they are struck with electricity.
What colours would these pixels have to be to produce all of the colours
we see on our TVs? Which part(s) of the eye does the screen resemble?
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20. |
Why are there more people in Canada
with SAD (Seasonal Affective Disorder) than in Mexico?
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