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Colorimetric differences in the retinal thickness in each layer between the groups. FH+ ApoE ɛ4 carriers vs. FH− ApoE ɛ4 no-carriers in the macular OCT rings. In red, thickening; in blue, thinning. (RNFL: retinal nerve fiber layer; GCL: ganglion cell layer; IPL: inner plexiform layer; INL: inner nuclear layer; OPL: outer plexiform layer; ONL: outer nuclear layer; RPE: retinal pigment epithelium). * p < 0.05. Mann–Whitney U test.
