Ocular Movements Flashcards Preview

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Flashcards in Ocular Movements Deck (17):
1

Cardinal Position

when only 1 muscle in each eye is responsible for movement

2

Field of Action

gaze to best observe a cardinal position

3

Agonist- Antagonist

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

4

Synergist Muscle

mm in same eye that move eye in same direction

5

Yoke Muscle

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

6

Sherrington Law

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

7

Hering Law

equal inn to both yoked mm

8

Primary Deviation

when unaffected eye is fixating

9

Secondary Deviation

when paretic/ restricted eye is fixating

10

Duction

rotation of one eye around axes of Fick

11

Version

conjugate eye movements/ rotation of both eyes

12

Conjugate Eye Movements

binocular movement where eyes move along same axis to maintain fixation

13

Vergence

disconjugate eye movement where eyes rotate in opposite directions

14

Convergence

both eyes rotate to maintain binocular fixation

15

Divergence

both eyes rotate out

16

Incyclovergence

rotation of superior portion of both eyes in

17

Excyclovergence

rotation of superior portion of both eyes out