One post mortem study reported a two‐ to three‐fold increase in neuroinflammatory markers in MCI and AD retinas compared to normal aging, with strong but unadjusted correlations with retinal Aβ and tau deposits (r = 0.73 to 0.83, p < 0.01, n = 14 to 15).118. This evidence concerns the gene MAPT and Alzheimer disease.