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Questions and Answers
What is the ratio used to measure the ability to track a moving target in smooth pursuit?
What is the ratio used to measure the ability to track a moving target in smooth pursuit?
- Velocity gain: ratio of target speed and eye speed (correct)
- Phase: eyes leading or lagging target
- Factors: age and attention; lower with age
- Latency: time for eyes to react
In saccades, what does 'velocity' refer to?
In saccades, what does 'velocity' refer to?
- Time for eyes to react
- How fast eyes move to reach target (correct)
- How well eyes refocus on target
- Quick eye movements to refocus fovea of eye
Which type of nystagmus indicates a central abnormality in gaze holding?
Which type of nystagmus indicates a central abnormality in gaze holding?
- Vertical nystagmus (correct)
- Nystagmus beating toward healthy side
- Square waves jerks present
- Greater intensity when vision denied
What type of BPPV involves short bursts in the vertical canals?
What type of BPPV involves short bursts in the vertical canals?
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What is the primary purpose of optokinetic testing?
What is the primary purpose of optokinetic testing?
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What is the effect of age on the velocity gain in smooth pursuit?
What is the effect of age on the velocity gain in smooth pursuit?
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What effect does vision denial have on nystagmus during VOR testing?
What effect does vision denial have on nystagmus during VOR testing?
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What type of nystagmus is indicative of a central abnormality in gaze holding?
What type of nystagmus is indicative of a central abnormality in gaze holding?
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What factor affects the latency in saccades?
What factor affects the latency in saccades?
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What is the primary purpose of optokinetic testing?
What is the primary purpose of optokinetic testing?
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