Reflection characteristics of the human fovea assessed by reflecto-modulometry

The optical quality of the human fovea was assessed by measuring the modulation of aerial fringes conjugate with the retina. The different possible causes of the decrease in modulation of this pattern were successively investigated, the main one being the passage through outer segments in unguided modes. Modulation diagrams measured on the fovea were compared with those of the perifovea.