Fig 4. Contrast sensitivity in logCS (median and interquartile range) before (Reference) and after stimulation under different conditions: S ONH (short-wavelength range at optic nerve head), S FF (short-wavelength range via screen full-field), M ONH (middle-wavelength range at optic nerve head), M FF (middle-wavelength range via screen full-field), L ONH (long-wavelength range at optic nerve head), L FF (long-wavelength range via screen full-field), P ONH (polychromatic light at optic nerve head) and P FF (polychromatic light via screen full-field) (n = 30; *** p<0.0001).