A and B, The distributions of the absolute estimation error |ε| for MAC, ONH, and MAC+ONH. Estimates across the 8 folds were collapsed. C and D, The medians and the third quartiles (Q3) of |ε|, evaluated on the test sets. C and D illustrate the results for VFI and MD respectively. The bars represent mean values across the 8 folds, and the circles represent values for the individual fold. Values calculated from the same fold are connected by line segments. Statistically significant comparisons (p<0.05) are indicated by the asterisks. dB = decibel; VFI = visual field index; MAC, ONH, MAC+ONH = estimation based on the macula scan, optic nerve head scan, and both; MD = mean deviation.