EOM Dysfunction

Question 1

What is important when looking for a EOM dysfunction?

Answer 1

headaches, diplopia (shows more recent onset), observation (head tilt/turn)

Question 2

What clinical tests would you preform to assess EOM dysfunction?

Answer 2

detailed case history
ocular motility
vision - VA, VF, CV
pupils
cover test - near and dist
sensory BV tests - amblyopia, suppression, AKC, stereopsis
ocular health

Question 3

What is Herring’s law of equal innervation?

Answer 3

during version eye movements, yoke simultaneously receive equal amounts of innervation.

Question 4

What is Sherrington’s law of equal innervation?

Answer 4

is the law of same eye muscles. It states that each extraocular muscle has an opposing muscle. When one muscle contracts, its opposing muscle must relax an equal amount to accomplish a given movement.

Question 5

What is the parks 3 step test?

Answer 5

The first step is to find out which eye is hypertropic in the primary position.
The second step in the Parks 3 step test is to determine whether the hypertropia decreases or increases on the right or left gaze.
The third step is to find out whether the hypertropia increases or decreases upon the right head tilt or left head tilt.