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Using Retinal Imaging to Study Dementia
Published on: November 6, 2017
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[The relationship between cognitive impairment and changes in retinal neuroarchitectonics]
A N Bogolepova1,2, E V Makhnovich1, A N Jyravleva3
1Pirogov Russian National Research Medical University, Moscow, Russia.
Zhurnal Nevrologii I Psikhiatrii Imeni S.S. Korsakova
|October 21, 2020
Summary
Optical coherence tomography reveals distinct retinal changes in Alzheimer's disease, glaucoma, and vascular dementia. These neuroarchitectonic alterations correlate with cognitive deficits, offering potential biomarkers for neurodegenerative conditions.
Area of Science:
- Neuroscience
- Ophthalmology
- Neurology
Background:
- Alzheimer's disease (AD), vascular dementia (VaD), and glaucoma are significant causes of cognitive impairment and visual dysfunction.
- Understanding the link between neurological conditions and retinal changes is crucial for early diagnosis and treatment.
- Optical coherence tomography (OCT) offers high-resolution imaging of retinal layers.
Purpose of the Study:
- To investigate the relationship between cognitive deficits and retinal neuroarchitectonics in patients with AD, VaD, and glaucoma.
- To identify potential retinal biomarkers for neurodegenerative diseases using OCT.
Main Methods:
- A study involving 90 patients diagnosed with AD, VaD, or glaucoma, divided into three comparable groups of 30.
- All participants underwent comprehensive neurological and neuropsychological assessments.
- Optical coherence tomography (OCT) was performed to analyze retinal structure.
Main Results:
- OCT revealed specific retinal changes in AD and glaucoma, primarily in the perifocal regions (upper and lower quadrants).
- In VaD, retinal changes were concentrated in the foveal (central) region, suggesting a potential biomarker.
- Cognitive deficit severity correlated with retinal layer degeneration in AD (peripapillary nerve fibers, perifocal region, ganglion cells, inner plexiform layers) and VaD (foveal inner plexiform layer).
Conclusions:
- Retinal neuroarchitectonic patterns observed via OCT differ across AD, VaD, and glaucoma.
- Foveal retinal changes may serve as a biomarker for vascular dementia.
- The degree of cognitive impairment in AD and VaD is associated with specific retinal layer degeneration.
Keywords:
Alzheimer’s diseasebiomarkerfoveal region of the retinaglaucomaoptical coherence tomographyretinaretinal perifoveal regionvascular dementiaMore Related Videos
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