Table 2: RNFL thickness and total macular volume.

Retinal area of studyAD groupControl group% RNFL decrease value

Peripapillary thickness (μm)Sector 1101.2 ± 24.4100.0 ± 16.91.240.790
Sector 296.8 ± 20.8100.4 ± 14.4−3.620.618
Sector 380.1 ± 22.990.8 ± 16.0−11.850.084
Sector 460.5 ± 18.365.4 ± 10.3−7.600.464
Sector 573.7 ± 12.768.3 ± 11.37.830.173
Sector 6101.4 ± 23.799.3 ± 19.02.020.790
Sector 7119.4 ± 19.1116.3 ± 21.92.620.756
Sector 8111.7 ± 21.6114.5 ± 24.5−2.480.564
Sector 966.3 ± 18.267.5 ± 16.5−1.800.877
Sector 1060.7 ± 13.857.3 ± 9.65.990.464
Sector 11 77.0 ± 20.678.5 ± 14.7−1.960.94
Sector 12101.3 ± 27.1110.7 ± 15.8−8.450.335

Foveal thickness (μm)Fovea221.2 ± 21.6243.7 ± 24.8−9.240.015

Inner macular quadrant (μm)Superior area283.4 ± 11.1294.9 ± 18.1−3.910.002
Inferior area279.8 ± 18.1295.8 ± 13.5−5.400.002
Nasal area285.6 ± 17.2300.1 ± 15.1−4.830.007
Temporal area273.1 ± 12.7285.2 ± 14.6−4.220.002

Outer macular quadrant (μm)Superior area245.4 ± 12.5252.1 ± 13.7−2.650.084
Inferior area242.8 ± 17.4245.2 ± 13.9−0.990.531
Nasal area263.7 ± 12.1267.5 ± 19.1−1.410.110
Temporal area228.0 ± 18.8238.5 ± 12.3−4.430.009

Total macular volume (mm3)7.1 ± 0.37.3 ± 0.39.340.024

Mean value ± SD; [AD, Alzheimer’s disease; RNFL: retinal nerve fiber layer; SD, standard deviation].