Variations in eye structure and function may reveal features of early-stage Alzheimer's disease - Medical News Today

 Using both animal models and postmortem human retinas from donors with
Alzheimer's disease, researchers found changes in the retinal pigment
epithelial layer, which harbors the supportive cells located in the back
of the eye, and in the thickness of the choroidal layer that has blood
vessels providing nutrients to the retina. Changes in these two regions
were detected using sophisticated, state-of-the-art imaging and
immunological techniques.

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