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Pattern electroretinogram and luminance electroretinogram in Alzheimer's disease
K Strenn1, P Dal-Bianco, H Weghaupt
1First University Eye Clinic, Vienna, Austria.
Journal of Neural Transmission. Supplementum
|January 1, 1991
Summary
This study investigated retinal function in Alzheimer's disease (AD) patients, examining electroretinograms. Despite visual symptoms in AD, retinal function tests showed no abnormalities, suggesting retinal function is not involved in the disease.
Area of Science:
- Neuroscience
- Ophthalmology
- Gerontology
Background:
- Visual symptoms are early indicators in Alzheimer's disease (AD).
- Studies indicate optic nerve degeneration and retinal ganglion cell loss in AD patients.
- Neurotransmitter reduction, like acetylcholine, in the brain may also affect the retina.
Purpose of the Study:
- To evaluate retinal function in patients with Alzheimer's disease.
- To investigate potential retinal involvement in the pathophysiology of AD.
Main Methods:
- Pattern electroretinograms (PERG) and scotopic/photopic luminance electroretinograms (LEMG) were recorded.
- Eight patients with Alzheimer's disease were compared to an age-matched control group.
Main Results:
- No significant abnormalities were detected in the pattern electroretinograms or luminance electroretinograms of AD patients.
- The results indicate preserved retinal function despite the presence of Alzheimer's disease.
Conclusions:
- Retinal function, as assessed by electroretinography, does not appear to be directly involved in Alzheimer's disease.
- Further research may be needed to fully understand the relationship between ocular changes and AD.