MAPT and Alzheimer disease: Strong inverse correlations were observed between pS396-tau+ or Oligo-tau+ RGCs and MMSE scores (Fig. 5p-r; r=-0.68-(-0.69), P = 0.0039 − 0.0034), including analyses restricted to MCI (due to AD) and AD patients (Fig. 5r), for both the total retina and across retinal subregions (Table 3; extended correlations for MCI and AD patients only in Suppl.