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Neuro-ophthalmic findings in progressive supranuclear palsy
D I Friedman1, J Jankovic, J A McCrary
1Department of Neurology, SUNY Health Science Center, Syracuse 13201.
Journal of Clinical Neuro-Ophthalmology
|June 1, 1992
Summary
Neuro-ophthalmic signs like vertical gaze palsy and eyelid abnormalities can help distinguish progressive supranuclear palsy (PSP) from Parkinson's disease. These findings were equally present in upgaze and downgaze in diagnosed PSP patients.
Area of Science:
- Ophthalmology
- Neurology
- Neuroscience
Background:
- Progressive supranuclear palsy (PSP) is a neurodegenerative disease often misdiagnosed as Parkinson's disease.
- Distinctive clinical features are needed to differentiate PSP from Parkinson's disease.
Purpose of the Study:
- To identify key neuro-ophthalmic findings that distinguish PSP from Parkinson's disease.
- To evaluate the prevalence of specific eye movement and eyelid abnormalities in PSP patients.
Main Methods:
- Retrospective chart review of 104 patients diagnosed with PSP.
- Detailed neuro-ophthalmic examinations for 38 of these patients by specialists.
- Comparison of clinical findings between PSP and Parkinson's disease.
Main Results:
- Vertical supranuclear ophthalmoparesis and fixation instability are significant differentiating features.
- Eyelid abnormalities, including lid retraction, blepharospasm, and apraxia of eyelid opening/closure, are important diagnostic signs.
- Both upgaze and downgaze palsies were equally prevalent at diagnosis, challenging the notion of downgaze palsy as the sole hallmark.
Conclusions:
- Neuro-ophthalmic examination is crucial for differentiating PSP from Parkinson's disease.
- Specific eyelid and vertical eye movement abnormalities are highly indicative of PSP.
- The equal involvement of upgaze and downgaze suggests a broader impact on vertical eye movements in early PSP.