Term
What errors does Worth 4-dot make in identifying suppression? |
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Definition
Worth 4 dot doesn't identify suppression at near and overidentifies it at distance |
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Term
| What is the best test for central suppression? |
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Definition
| Keystone Skills-railroad track cards |
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Term
What is the goal of accomodative rock therapy? |
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Definition
To do the task accurately and sustain accomodation throughout a task for a while, then change accomodative posture. |
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Term
What is the problem with using vectogram targets the same way you would change prisms in a phoropter to test vergence ranges? |
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Definition
The patient is not using their range of vergence throughout the day. They need to be able to maintain fusion at 40-50cm. |
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Term
Is VO star best as a test or therapy? |
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Definition
According to Damari, it's really only a test. The patient ends up learning the test so improvement on the test doesn't mean vision has improved. |
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Term
| What are the first three phases of vision therapy? |
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Definition
1. Monocular Therapy pursuits, saccades, accomodation, antisuppression 2. Transition Therapy MFBF, Bi-ocular tasks... e.g. keystone skills and Von Graefe phoria respectively 3. Binocular phase |
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Term
Are Groffman visual tracings a test of pursuits or saccades? |
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Definition
Groffman visual tracings are a test of discrete saccades. |
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Term
| What is the plan for later phase treatments? |
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Definition
1. Binocular tasks 2. BOP/BIM |
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Term
| What is the stimulus for pursuits? |
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Definition
| a moving target on the fovea |
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Term
If attention is poor on cover test, what other test will indicate poor attention and therefore you should look at closely? |
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Definition
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Term
| Why is poor fixation almost always manifest by saccadic intrusions? |
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Definition
| Saccades require the patient to shift his attention momentarily from central vision to peripheral vision to calculate how far he must shift his eyes. |
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Term
What three elements do reading eye movements consist of? |
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Definition
1. fixation 2. Saccade 3. Return Sweep |
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Term
| What is the latency of a pursuit? |
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Definition
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Term
| What is the latency of a saccade? |
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Definition
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Term
| How fast is a pursuit eye movement? How fast is a saccadic eye movement? degrees/second |
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Definition
1. 60 degrees/s 2. 700-800 degrees/s |
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Term
By what age should pursuits be smooth? |
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Definition
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Term
What order do the different directions of saccades develop? |
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Definition
horizontal vertical diagnoal
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Term
What is the large variability in saccadic length and fixation duration? |
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Definition
The ease or difficulty involved in processing the currently fixated text. |
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Term
How is the NSUCO/Maples Oculomotor test different from the SCCO test? |
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Definition
In the NSCO test, the patient is standing. |
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Term
What is monocular fixation in a binocular field? |
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Definition
Both eyes are uncovered but they are seeing different targets. Only one eye is participating in the task you want the patient to do. |
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