CNN: Can we predict Alzheimer’s a decade before symptoms?

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CNN Retinal Testing for Alzheimer's

New Retinal Imaging Test for Alzheimer’s

One day when she was 76 years old, Rosa Rodrigo took a wrong turn out of a shopping center parking lot and found she had no idea where to turn next.

“It was a little scary because I didn’t remember where I came from, or where I was going,” she recalls.

While Rodrigo and her family were alarmed, it was only after several more years of fading memory and worsening mental condition that Rodrigo was diagnosed with Alzheimer’s disease.