We should remember that there is a lot of computing going on in the retina already, and that rod cells of the retina are so sensitive that they can detect even

We should remember that there is a lot of computing going on in the retina already, and that rod cells of the retina are so sensitive that they can detect even single photons [1]. The density of cells also depends on the location of the FoV that we are talking about. We have many more connections and computation power reserved for the fovea than for our peripheral vision. With that said, I'm pretty sure that our perception of noise is not as dissimilar as you suggest. By doing the simple experiment of freezing on a static noise frame and asking participants to tell me whether a pixel was black or white, I'd expect most people to get it right. https://www.cns.nyu.edu/csh/csh04/Articles/Rieke1998.pdf https://www.cns.nyu.edu/csh/csh04/Articles/Rieke1998.pdf