Assessment of Eye Movements (M1)

Question 1

What is the quantitative way to electronically monitor saccadic eye movements?

Answer 1

electro oculographic instruments (Visagraph, Readalyzer, Eye Trac)

Question 2

What are the measurements taken during the NSUCO saccadic test?

Answer 2

1. ability (1 to 5)
2. accuracy (1 to 5)
3. head movement (large, moderate, slight)
4. body movement (large, moderate, slight)

Question 3

What are the disadvantages to NSUCO testing?

Answer 3

difficult to quantify results with different people observing

Question 4

How many errors are allowed when using the Visagraph?

Answer 4

4

Question 5

Which areas may improve with improved eye movement efficiency but are not being treated directly?

Answer 5

reading and sports

Question 6

What is the management for oculomotor dysfunction?

Answer 6

1. prescribe uncorrected refractive error
2. therapy
3. help with other associated accom or binoc problems

Question 7

What are the visual verbal timed standardized tests for saccadic eye movements?

Answer 7

1. DEM

2. King devick

Question 8

What is the grading scale for pursuit eye movements? What is the expected value?

Answer 8

1. 1+ more than two fixation loss
2. 2+ two fixation losses
3. 3+ one fixation loss
4. 4+ smooth and accurate
   Expected: 3+ or better

Question 9

What is the technique to assess stability of fixation?

Answer 9

observation of fixation for 10sec

Question 10

What is the test in which the patient looks back and forth between two objects 20cm apart? 1. What is the test distance for this? 2. How should the patient be oriented? 3

Answer 10

1. NSUCO Saccadic test
2. Harmon distance to 40cm
3. binocular, standing

Question 11

What is the technique to assess pursuit eye movements?

Answer 11

subjective observation

Question 12

What are the signs of oculomotor dysfunction?

Answer 12

1. problems with fixation, saccades and pursuits

2. below age expected test performance

Question 13

What are the techniques to assess saccadic eye movements?

Answer 13

1. subjective observation
2. visual verbal timed, standardized tests
3. electro oculographic instruments
4. Pepper VSRT
5. OKN (suspect pathology)