Oculomotor Dysfuntion Flashcards
Which oculomotor test is used to differentiate between automaticity problems and oculomotor dysfunctions?
DEM
What are the three oculomotor skills?
Fixations
Pursuits
Saccades
While doing the readalyzer, the patient obtains 60% correct responses on the comprehension. What should be done next?
70% comprehension is required, so repeat the test
While doing the Readalyzer, the patient obtains 90% correct responses on the comprehension, and 30% in reliability. What should be done next?
Poor reliability indicates that something was wrong with the test, so redo it
While doing the Readalyzer, the patient obtains 50% correct responses on comprehension. What should be done?
Repeat the test using a lower grade level, or the same level with an easier paragraph
During SCCO pursuits, a patient loses fixation 2 times. What would the score be?
2+
During NSUCO pursuits, a patient is able to complete one rotation, and has three fixation loses, plus slight head/body movement less than 50% of the time. What would the score be?
3/3/4
What does DEM type II performance indicate?
Increased horizontal time with normal or close to normal time in the vertical test
Ratio will be higher than expected in this case
What does DEM type I indicate?
Average or normal performance
What does DEM type IV indicate?
Problems with automaticity and oculomotor dysfunction
It is a combination of type II and III
What are the diagnostic factors for oculomotor dysfunctions?
Reduced accuracy of ocular pursuits/saccades
Difficulty separating head/body and eye movements
Difficulty sustaining adequate pursuit or saccadic eye movement under cognitive demands
Inability to follow targets in proper sequence
Need for tactile/kinesthetic reinforcement while performing ocular motor activities
Inability to adequately sustain fixation/errratic fixations
Increased time required to perform tasks dependent upon saccadic eye movements
When is the Readalyzer/visagraph indicated?
Evaluate reading skill
Monitor reading skill development
Check that reading skill goals have been achieved
To measure reading parameters like reading speed, regressions, and fixation duration
What symptoms are related to oculomotor dysfunctions?
Loss of place Omission of words Difficulty tracking Poor academic performance Reduce efficiency and productivity Poor attention span Muscular incoordination Vertigo Motion Sickness
Increased horizontal time and normal vertical time in DEM indicates what?
Type II
Name at least 3 drugs that can cause oculomotor dysfunction.
Carbamazepine Diazepam Methadon Chlordecone Lithium Phenytoin
List 3 signs and symptoms of oculomotor dysfunction.
Loss of place/omission of words when reading Difficulty tracking objects Poor academic performance Reduced efficiency and productivity Poor attention span Muscular incoordination Vertigo Motion sickness
What are the grades for SCCO pursuits?
4+ smooth and accurate
3+ one loss of fixation
2+ two losses of fixation
1+ three losses of fixation
Describe the SCCO test for pursuits.
Patient follows fixation target from left to right, up and down, and in circles
What are the grades for SCCO saccades?
4+ smooth and accurate
3+ slight over/undershooting
2+ large over/undershooting
1+ unable to do the task, or increased latency
Describe the SCCO test for saccades.
The pt is asked to look from one point to another 10 times. Targets are 10 cm apart
What three areas of performance does NSUCO test?
Ability
Accuracy
Movement
What are the grades for NSUCO saccades?
5 completes5 roundtrips 4 completes 4 3 completes 3 2 completes 2 1 completes less than 2
What are the grades for NSUCO saccade accuracy?
5 no over/undershooting
4 intermittent slight over/undershooting less than 50% of the time
3 constnce slight over/undershooting more than 50% of the time
2 moderate over/undershooting one or more times
1 large over/undershooting one or more times
What is the NSUCO grading system for head and body movement?
5 no movement of the head or body
4 slight movement of the head or body less than 50% of the time
3 slight movement of the head or body more than 50% of the time
2 Moderate movement of the head or body at any time
1 no movement of the head or body
