Binocular Refraction

Question 1

advantages to binocular refraction

Answer 1

“more” normal environment, provide additional tests for binocular vision anomalies, pt’s that cannot undergo binocular balancing techniques

Question 2

Turville Infinity Balance (TIB)

Answer 2

apparatus divides left and right eye - basically monocular refraction without occlusion

Question 3

TIB steps

Answer 3

1. preliminary test 2. balancing accommodation 3. Lateral imbalance (exophoria first, esophoria second) 4. vertical imbalance 5. suspension and supression

Question 4

TIB preliminary test

Answer 4

“L F” chart - L left eye F right eye

Question 5

TIB preliminary “E” response

Answer 5

fused - eyes diverged - add BI prism until seperate

Question 6

TIB preliminary “L” response

Answer 6

suppressing R eye

Question 7

TIB preliminary “F” response

Answer 7

suppressing L eye

Question 8

polarization

Answer 8

process of turning unpolarized light into polarized light

Question 9

polarized chart

Answer 9

chart in which a polarized letter is used on a normal background

Question 10

polarized letters

Answer 10

letters which reflect their light rays only in one direction

Question 11

Perpendicular to polarized letters

Answer 11

light blocked - black symbol/white background

Question 12

parallel to polarized letters

Answer 12

light passes - white symbol/black background