1 - Intro to Binocular Vision

Question 1

Advantages of binocular vision?

Answer 1

better acuity, depth perception, better contrast, larger field of view

Question 2

Disadvantages of binocular vision?

Answer 2

strabismus, amblyopia, confusion/rivaly

Question 3

3 requirements for binocular vision?

Answer 3

1. Refractive Error
2. Motor Fusion
3. Sensory Fusion

Question 4

Mohindra is done (monocularly/binocularly), in a (light/dark) room

Answer 4

monocularly, dark

Question 5

Mohindra is done from 50 centimeters, the target is the retinoscope light, and the working distance removed is: _D

Answer 5

1.25

Question 6

a damp refraction indicated use of _

a wet refraction indicates use of _

Answer 6

tropicamide

cycloplegic

Question 7

stereopsis depends on _

Answer 7

motor and sensory fusion

Question 8

heterophoria is the natural resting position of they eyes when _

Answer 8

dissociated (no demands to fuse -> not binocular)

Question 9

heterophoria is overcome with _

Answer 9

motor fusion

Question 10

the amount of effort needed to overcome the heterophoria is equal to the _

Answer 10

fusional vergence demand

Question 11

esophoria requires _ to compensate

Answer 11

divergence (NFV)

Question 12

exophoria requries _ to compensate

Answer 12

convergence (PFV)

Question 13

hyperphoria is a _ demand for motor fusion

Answer 13

vertical

Question 14

cyclophoria is a _ deviation under dissociated conditions

Answer 14

torsional

Question 15

with esophoria, _ lenses help by _

Answer 15

+ relaxing accommodation

Question 16

with exophoria, _ lenses help by _

Answer 16

• stimulating accommodation

Question 17

poor motor fusion symptoms:

Answer 17

diplopia, uncomfortable eyes, troubles reading, kid cover eye to eliminate double vision

Question 18

poor sensory fusion symptoms:

Answer 18

sometimes asymptomatic, suppression

Question 19

refractive error symptoms:

Answer 19

blur, strain, squinting