Term
What should VT not be used for? |
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Definition
1. To fix a paretic EOM 2. DI problem secondary to a nerve problem |
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Term
Attention directs _______. _______ directs _____ & ______. Therefore it all depends on the ability to attend. |
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Definition
1. fixation 2. Fixation 3. pursuits & saccades |
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Term
| What is the first test that tests fixation? |
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Definition
cover test and retinoscopy If the patient cannot fixate, write CT unreliable, patient has difficulty fixating
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Term
Can a patient have good quality pursuits without being able to fixate? |
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Definition
If fixation was poor on the cover test, pursuits should also be poor quality. |
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Term
| What is the stimulus for a pursuit? |
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Definition
| a moving target on the fovea, a stationery target such as Rothman visual tracing tests a discrete series of saccades, not pursuits |
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Term
Where is the stimulus for a saccade? What does this say about attention? |
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Definition
The stimulus for a saccade is in the patients periphery. Therefore if the patient doesn't have some attention in the periphery even though he is supposed to be fixating centrally. |
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Term
| What type of movements are reading eye movements? |
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Definition
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Term
Eye movement disorders are caused by ______ problems, but they also may be misdiagnosed as ______ problems. |
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Definition
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Term
What disorder is characteristic of people missing the words "not," or "except," in a test question? |
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Definition
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Term
| What does the length of the horizontal line represent on a visigraph? |
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Definition
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Term
What do the vertical steps on the visigraph represent? |
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Definition
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Term
How many fixations should you see on one line of a visigraph? |
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Definition
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Term
How many regressions are normal on a visigraph test? |
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Definition
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Term
| What do the down lines represent on the visigraph? |
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Definition
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Term
What is the span of recognition measured in? |
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Definition
the number of words the patient takes in per fixation |
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Term
Is suppression a phenomena of the parvo or magnocellular system? |
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Definition
parvocellular system, therefore stimulating the magnocellular system by moving an object stops suppression |
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Term
Name three monocular therapies? |
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Definition
foveation acccomodation Anti-suppression
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Term
Name the number of fixation losses for grades 1-4 according to the SCCO grading system for pursuits. |
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Definition
Remember penny, shoe, tree represents the grade. 3 pennies, 2 shoes, and 1 tree 1. more than two fixation losses 2. Two fixation losses 3. One fixation loss 4. No fixation losses for 10s |
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Term
According to SCCO, are pursuits or saccades tested while standing? |
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Definition
Pursuits are tested while standing. The patient is seated for saccades testing. |
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Term
| Name three methods to test pursuits. |
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Definition
1. SCCO 2. NSCO 3. Groffman Visual Tracing |
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