Ocular Movements

Question 1

Cardinal Position

Answer 1

when only 1 muscle in each eye is responsible for movement

Question 2

Field of Action

Answer 2

gaze to best observe a cardinal position

Question 3

Agonist- Antagonist

Answer 3

pair of mm in same eye that move eye in opposite directions

Question 4

Synergist Muscle

Answer 4

mm in same eye that move eye in same direction

Question 5

Yoke Muscle

Answer 5

pair of mm (one each eye) that have conjugate eye movements

Question 6

Sherrington Law

Answer 6

increased inn to one m = decreased inn to antagonist in the same eye

Question 7

Hering Law

Answer 7

equal inn to both yoked mm

Question 8

Primary Deviation

Answer 8

when unaffected eye is fixating

Question 9

Secondary Deviation

Answer 9

when paretic/ restricted eye is fixating

Question 10

Duction

Answer 10

rotation of one eye around axes of Fick

Question 11

Version

Answer 11

conjugate eye movements/ rotation of both eyes

Question 12

Conjugate Eye Movements

Answer 12

binocular movement where eyes move along same axis to maintain fixation

Question 13

Vergence

Answer 13

disconjugate eye movement where eyes rotate in opposite directions

Question 14

Convergence

Answer 14

both eyes rotate to maintain binocular fixation

Question 15

Divergence

Answer 15

both eyes rotate out

Question 16

Incyclovergence

Answer 16

rotation of superior portion of both eyes in

Question 17

Excyclovergence

Answer 17

rotation of superior portion of both eyes out