VS3 (Optometry) BINOCULAR VISION INTRO & VISUAL DIRECTION,
FUSION AND THE HOROPTER EXAM 1 QUESTIONS AND ANSWERS
1. Binocular vision involves our vision with strabismus, aniseikonia
both eyes. It is important to study so that
we can help patients with what 2 main dis-
orders?
2. How would only having monocular vision af- lack accurate depth percep-
fect how we see the world around us? tion
3. What are the 4 main advantages of binocular 1. extra eye in case one is
vision? messed up
2. sharper, clearer, more
sensitive vision
3. larger, overlapping view-
ing field
4. stereopsis
4. refers to the combination of signals from binocular summation
each eye in ways that make performance on
many tasks better with both eyes than with
either eye alone
this is why BV makes our vision sharper,
clearer, and more sensitive!
5. Which visual acuity is usually better: binoc- binocular
ular or monocular?
6. Which contrast sensitivity is usually better: binocular
binocular or monocular?
7. True or false: The retinal image from the two false
eyes is identical.
, VS3 (Optometry) BINOCULAR VISION INTRO & VISUAL DIRECTION,
FUSION AND THE HOROPTER EXAM 1 QUESTIONS AND ANSWERS
8. separation of the two eyes that accounts for interocular distance
the retinal image from the two eyes not being
identical
9. What divides the extreme nasal part of each nose
eye's visual field? (acts as a septum)
10. Why is it an advantage that the retinal image allows us to have stereopsis
from the two eyes is not identical? (BIGGEST advantage of
BV!)
11. Why would it not necessarily be advanta- would require more neu-
geous to have more than two eyes? ronal work to align more
retinal images
12. Can depth be perceived monocularly? yes
(but not as good as binocu-
larly)
13. What are 4 monocular cues for depth? pictorial cues, angular dec-
lination below the horizon,
motion parallax, accommo-
dation
14. What are the 8 pictorial depth cues? relative size, familiar size,
linear perspective, texture,
interposition, clarity, light-
ing, shadow
15. monocular pictorial depth cue involving size relative size
of an object (compared to other objects) in-
dicating distance from the view
example: smaller = farther away, bigger =
closer
16. monocular pictorial depth cue involving size familiar size
of an object based on knowledge of the typ-
ical size of objects
,17. monocular pictorial depth cue: the more that linear perspective
parallel lines converge, the farther their per-
ceived distance
18. monocular pictorial depth cue in which two interposition
objects are in the same line of vision and one
patially conceals the other, indicating that
the first object concealed is further away
19. monocular pictorial depth cue assuming that texture
you can see the "feel" of something up close,
but not as much when it is distant
20. monocular pictorial depth cue in which we clarity
can see things in sharper detail when they
are closer to us, and they are blurrier when
they are farther away
21. monocular pictorial depth cue in which we lighting
can use a light source in an image (e.g., the
sun) to help figure out the distance of the
objects in the image from the viewer
22. shadow
, monocular pictorial depth cue in which we
can use the shadows cast by the objects in
an image to determine their distance from
the viewer
23. How can angular declination below the hori- objects that slope down be-
zon serve as a monocular cue for pictorial low the horizon are gener-
depth? ally perceived to be farther
away
24. monocular pictorial depth cue in which the motion parallax
relative movement of elements in a scene
gives depth information when the observer
moves relative to the scene
**can also be observed when closing one eye
and then the other
25. According to motion parallax, do objects be- same
hind your fixation point appear to move in
the same or opposite direction as you?
26. According to motion parallax, do objects in opposite
front of your fixation point appear to move in
the same or opposite direction as you?
27. Which objects appear to move more: closer closer due to larger visual
or farther? Why? According to what princi- angle - motion parallax
ple?
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