Noninvasive eye scan could detect key signs of Alzheimer's years before patients show symptoms

(Cedars-Sinai Medical Center) Cedars-Sinai neuroscience investigators have found that Alzheimer's disease affects the retina -- the back of the eye -- similarly to the way it affects the brain. The study also revealed that an investigational, noninvasive eye scan could detect the key signs of Alzheimer's disease years before patients experience symptoms.