> From these recordings, the researchers calculated that a guinea pig
> retina transfers data at about 875 kilobits per second. Human retinas
> have about ten times as many ganglion cells, giving a “bandwidth” of
> 8.75 megabits per second.

Read more: https://www.newscientist.com/article/dn9633-calculating-the-speed-of-sight/#ixzz7Ig3MCMrR