Our eyes may provide early warning signs of Alzheimer’s and Parkinson’s - The Washington Post

Changes in retinas seem to mirror what’s going on in the brain. Researchers say eye tests may eventually lead to early treatments for some neurodegenerative ailments. https://www.washingtonpost.com/health/retiina-changes-in-early-alzheimers/2021/02/26/24c57bfa-6bba-11eb-9ead-673168d5b874_story.html