Curcio, C. A., Sloan, K. R., Kalina, R. E., Hendrickson, A. E., 1990. Human photoreceptor topography. J Comp Neurol 292, 497-523.
Click below for a copy of this article, for panels of figure 5 showing
color-coded maps of photoreceptor topography, and for a spreadsheet
with cone and rod densities along the 4 cardinal meridians of the
retina.