A, The distribution of MAC signal strength in the test sets. B, The median absolute errors of MAC for VFI, stratified by the signal strength. C, the same as B, but for MD. D, E, F, the same as A, B, C, but for ONH. The red lines indicate median errors across all signal strengths. The bar charts illustrate means and standard deviations across the 8 folds on the test sets. dB = decibel; MD = mean deviation; ONH = estimation based on optic nerve head scan; VFI = visual field index.