English: Shows the density of cone and rod cells for a horizontal slice through a human left eye (through fovea and blind spot), depending on the distance (angle in degrees) from the fovea center. Data taken from p.104 of the book "Allgemeine Psychologie - Eine Einführung" (General Psychology - An Introduction), C. Becker-Carus 2011, Springer. - Meanwhile, I recommend to use the File:Human photoreceptor distribution.svg instead, which conveys the same information, but looks nicer, and is a vector graphic; JB.