Fig. 1.
Circles: predictions for LvsM and SvsLM contrast settings needed to maintain a balanced purple for full macular pigment (solid line) and for macular pigment reductions of 0.1 to 0.3 log units (dashed lines). Triangles: actual settings by observers MW and SO for foveal settings (solid symbols and solid line) or peripheral settings at 8° (empty symbols and dashed line).