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Ocular Anatomy and Physiology : > Monocular and Binocular Movements > Flashcards

Monocular and Binocular Movements Flashcards

1
Q

What are benefits of Binocular Vision?

A

Single Vision
Stereovision
Increase field of vision
Compensation for blind spot

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2
Q

What is single vision?

A

no double

image from each eye

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3
Q

What is stereovision?

A

depth perception

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4
Q

What is placing the image at fovea?

A

Fixation

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5
Q

What is merging 2 images into one?

single image

A

Fusion

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6
Q

What is 2 images are perceived - 1 from each eye?

double vision

A

Diplopia

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7
Q

What occurs when the brain will ignore one of the images in diplopia?

A

Suppression

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8
Q

What is the term for lazy eye?

A

Amblyopia

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9
Q

What is Amblyopia?

A

reduced best corrected visual acuity (rbcva). When the brain does not receive clear images during development

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10
Q

What are the two Oculomotor Control?

A

Saccades

Smooth pursuits

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11
Q

What is the FAST movement that keep the image in fovea?

- frontal lobe

A

Saccades

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12
Q

What is the SLOW movement?

- parietal-occipital region

A

Smooth pursuits

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13
Q

Is the duction movement monocular or binocular?

A

Monocular

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14
Q

What is abduction?

A

They eye moves AWAY from the midline

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15
Q

What is adduction?

A

Eyes looking closer to the midline

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16
Q

What is Supraduction?

A

One eye looking up

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17
Q

What is Infraduction?

A

One eye Looking down

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18
Q

What is Intorsion?

A

Rolling medially

towards the nose

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19
Q

What is Extorsion?

A

Rolling laterally

away from the nose

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20
Q

What are versions?

A

Both eyes in the same direction

21
Q

What is Dextroversion?

A

both eyes looking RIGHT

22
Q

What is Levoversion?

A

both eyes looking LEFT

23
Q

What is Supraversion?

A

both eyes looking UP

24
Q

What is Infraversion?

A

both eyes looking DOWN

25
Q

What is vergence?

A

both eyes moving towards or away from each other

26
Q

What is convergence?

A

eyes rotate TOWARD each other to look at a close image

27
Q

Does the eyes look at a close image or a far image when they converge?

A

close image

28
Q

What is divergence?

A

eyes rotate AWAY from each other

29
Q

Does the eyes look at a close image or a far image when they diverge?

A

far image

30
Q

What is a deviation of the eyes that is controlled by fusion?

A

Heterophoria

31
Q

What is the ocular movement involving only one eye?

A

Duction

32
Q

What is both eyes move towards the midline to maintain or achieve a single image?

A

Convergence

33
Q

What is the perception of depth ; requires visual stimuli from both eyes?

A

Stereopsis

34
Q

What is the RAPID movement that directs the eyes towards a visual target?

A

Saccades

35
Q

What is the ability to perceive the relative distance of objects ; may occur monocularly or binocularly?

A

Depth Perception

36
Q

What is the upward movement of both eyes?

A

Supraversion

37
Q

What is a monocular cue for depth perception? as we move our head, closer objects move faster than distant objects.

A

Motion parallax

38
Q

What is a binocular movement of the eyes together in the same direction?

A

Versions

39
Q

What occurs when parallel lines are converging and diminishing in a distance?

A

Vergence

40
Q

What is the movement of both eyes to the right?

A

Dextroversion

41
Q

What is the movement of one eye downward?

A

Infraduction

42
Q

What is the movement of both eyes away from the midline in order to maintain or achieve a single image?

A

Divergence

43
Q

What is the movement of they eye towards the midline?

A

Adduction

44
Q

What is the upward movement of one eye?

A

Supraduction

45
Q

What is the movement of both eyes to the left?

A

Levoversion

46
Q

What is the constant deviation of the eyes that is not controlled?

A

Heterotropia

47
Q

What is the downward movement of both eyes?

A

Infraversion

48
Q

What occurs when the brain ignores the image from one eye in order to avoid double vision?

A

Suppression

49
Q

What is the lateral movement away from the midline?

A

Abduction

Ocular Anatomy and Physiology : (30 decks)

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