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7 Cards in this Set
- Front
- Back
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In nystagmus treatment, what are our objectives?
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1. improve pt's vision
2. reduce CHP |
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How would you decrease a nystagmus pt's CHP?
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use prisms to shift their null zone toward primary position
point apex toward eyes in null zone position |
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What are two methods used to dampen nystagmus?
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Vergence ex. nyst blockage synd
Versions - ex. null zone in L gaze |
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WHat is the risk associated with pt using convergence to dampen their nystagmus?
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can cause an esodeviation because of sustained convergence efforts resulting in hypertonicity of MR muscles
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What can you conclude if a patient has an inconsistent CHP?
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they have periodic alternating nystagmus (PAN)
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Why are BO prisms used to dampen nystagmus? What does a pt need to have established if this treatment is used?
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because they stimulate convergence
pt must have BSV - binocular fusion |
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What is the major problem associated with using BO prism OU to dampen nystagmus?
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higher prisms blur pt vision, pt can't tolerate
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