Eye exams may uncover Alzheimer’s warning signs years before memory loss appears | Mice with a common gene mutation showed twisted retinal vessels tied to dementia, hinting at early diagnostics.

[u/chrisdh79]

https://interestingengineering.com/health/eye-exams-alzheimers-early-detection

[u/oblivious_affect]

Don’t tell anyone but there are a genes which determine the vascularization of the nervous system and not just inside the brain