Eye Movements

Question 1

smooth pursuit

Answer 1

ability to follow a moving object
eye and head turning

Question 2

Saccades

Answer 2

rapid, jumping movements
voluntary

Question 3

Fixation

Answer 3

holding a steady gaze

Question 4

Vestibular Ocular Reflexes

Answer 4

If the head moves, the eyes can maintain fixation
The visual system is connected to the ears and balance centre

Question 5

Optokinetic Reflex

Answer 5

smooth eye movements and saccades combined

Question 6

Ductions

Answer 6

eye movements that occur with a single eye at a time

Question 7

Rotation about the z axis

Answer 7

vertically superior to inferior
- medial rotation - adduction
-lateral rotation- abduction

Question 8

Rotation about the x axis

Answer 8

horizontal from nasal to temporal
elevation
depression

Question 9

torsion

Answer 9

cyclorotations
rotation about the y axis - horizontal from anterior to posterior
rotation nasally- intorsion
rotation temporally- extortion

Question 10

Versions

Answer 10

movements in the same direction (yolked)
rightward, leftward, elevation, depression

Question 11

Vergence

Answer 11

movements in opposite directions
Disjunctive- opposite
Convergence- towards nose
divergence- temporal simultaneous movement
intorsion
extorsion