Eye tests could spot signs of Alzheimer's years before symptoms first appear, new research suggests

Experts believe the retina may predict Alzheimer's risk because it is part of the central nervous system and connected directly to the brain via the optic nerve.

Eye tests could spot signs of Alzheimer's years before symptoms first appear, new research suggests

Experts believe the retina may predict Alzheimer's risk because it is part of the central nervous system and connected directly to the brain via the optic nerve.