Early signs of dementia could be detected in routine eye tests up to 20 years before symptoms appear, according to a new study.
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Retinal scans in mice show normal blood vessels that are evenly spaced and well-organized (left). Scans of mice with the MTHFR677C>T mutation show blood vessels that more often cross over each other in unusual ways (center, marked in yellow) and more twisted or tortuous vessels (right, marked in yellow). (The Jackson Laboratory via SWNS)
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A retinal scan of a young mouse with a common mutation called MTHFR677C>T, which is linked to Alzheimer's disease risk, shows disease-like blood vessels that are twisted and irregular. (The Jackson Laboratory via SWNS)
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