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Abnormal eye movements in Gerstmann-Sträussler-Scheinker disease
R D Yee1, M R Farlow, D A Suzuki
1Department of Ophthalmology, Indiana University School of Medicine, Indianapolis 46202-5124.
Archives of Ophthalmology (Chicago, Ill. : 1960)
|January 1, 1992
Summary
Gerstmann-Sträussler-Scheinker disease, a rare inherited neurological disorder, often presents with ataxia and dementia. Eye movement abnormalities were observed in affected individuals and some at-risk family members, suggesting potential early detection methods.
Area of Science:
- Neurology
- Ophthalmology
- Genetics
Background:
- Gerstmann-Sträussler-Scheinker disease (GSS) is a rare, autosomal dominant prion disease.
- It is characterized by progressive ataxia, dementia, and sometimes extrapyramidal signs.
- Early diagnosis is crucial for management and genetic counseling.
Observation:
- This study investigated neuro-ophthalmic findings and eye movement patterns in a large family with GSS.
- Researchers examined five affected individuals and eleven at-risk family members.
- Advanced techniques including videotape, electro-oculography, and magnetic scleral search coil were employed.
Findings:
- All affected individuals exhibited abnormal eye movements consistent with cerebellar and extrapyramidal disorders.
- Nine at-risk members had normal eye movements.
- Two at-risk members displayed subtle abnormalities in their eye movements.
Implications:
- Neuro-ophthalmic examinations and eye movement recordings may serve as valuable tools for identifying early GSS.
- These methods could aid in the early detection of GSS in individuals with a family history.
- Further research can refine these techniques for improved diagnostic accuracy in GSS.