1. Intro to binocular vision Flashcards
1
Q
why binocular vision
A
- larger binocular visual field
- panoramic vision - binocular summation
- 2 eyes looking at the same thing see if better than 1 - spare eye
- stereopsis (MAIN REASON)
2
Q
what is physical space
A
the measurable 3D space around us, and everything in it
3
Q
what is visual space
A
your perception of physical space
4
Q
how many visual spaces do all patients have?
what does diplopia mean in this sense?
A
- all patients have only 1 visual space
- diplopia means seeing 2 identical images in one’s single visual space
5
Q
what are the 3 components of stereoscopic visual space
A
- perceiving the directions of images
- making one image from two
- building stereopsis
6
Q
what helps with seeing “where” things are?
what helps with “what” things are?
A
binocularity help w/ wehre => space perception
stereopsis helps w/ what => secondary
7
Q
what are some examples of when visual space doens’t equal physical space
A
- optical illusions-normal
- entoptic phenomena-normal
- abnormal vision
8
Q
what are 3 common types of poor binocularity
A
- strabismus
- nonstrabismic vergence anomalies
- anisometropia
9
Q
what are some consequences of poor binocularity
A
- diplopia
- binocular rivalry
- suppression
- poor cosmesis
- amblyopia
- aniseikonia
- anomalous retinal correspondence
- blurred vision
- discomfort symptoms
- stereoblindness
