Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

BV and Optometric Neurophysiology > Intro to BV/Cover Test > Flashcards

Intro to BV/Cover Test Flashcards

1
Q

What is simultaneous perception?

A

Perceiving that there are two images, but seeing them separately

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is fusion?

A

Ability to fuse two images into a single percept

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is stereopsis?

A

Ability to perceive depth due to retinal disparity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is flat fusion?

A

Perceiving two images and fusing them, with no depth perception

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is suppression?

A

Ignoring the image from one eye to avoid diplopia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Why do we have BV?

A

To increase FOV
To compensate for blind spot
Binocular summation
Stereopsis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is binocular summation?

A

the combination of two images results in improved VA due to processing in the brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What’s needed for BV?

A

Two eyes
Similar image size
Similar VA (good)
Intact visual pathways
Sensory and motor pathways working properly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What sensory elements contribute to BV?

A

Sensing alignment of eyes
Signalling to motor system to align muscles
Ability to make sense of monocular images to combine them
Localisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What motor elements contribute to BV?

A

Voluntary EOMS
Involuntary ciliary and pupil muscles
Ability to move eyes to line up with target and maintain alignment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

When does the plastic period end?

A

8-9 years old

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What happens if BV issues are not addressed within the plastic period?

A

Suppression
Little to no stereopsis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are corresponding points?

A

Areas on each retina which perceive the same part of the image

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the Primary visual direction also known as?

A

Principal visual direction
Visual axis
Direction of gaze

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What does the secondary visual direction perceive?

A

Anything outside of the fovea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is oculocentric localisation?

A

Locating objects relative to the Primary visual direction

17
Q

What is egocentric localisation?

A

Locating objects relative to the body

18
Q

What is retinal disparity?

A

The difference seen between the two retinas when looking at the same object

19
Q

What is physiological diplopia?

A

Seeing objects double in the peripheral (outside of Panum’s area) due to retinal disparity

20
Q

What is the horopter?

A

A plane in front of a person in which they can fixate and all objects are perceived singly

21
Q

What is Panum’s area?

A

The area around the horopter in which depth can be perceived

22
Q

When do BV problems develop?

A

At birth or up to age 5
Acquired due to trauma, CN palsy or decompensation

BV and Optometric Neurophysiology (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions