[mattkrause]

Humans are even slower than that.

If you measure the response of individual photoreceptors, it takes 25-50 ms to peak after a flash of appropriately-colored light; the precise number depends on the color and intensity of the light. After that, the signal still needs to propagate through a bunch of visual brain areas, and then even more needs to happen to somehow influence behavior. With everything tuned just so, you can complete that whole process in 100 ms or so, but the conditions have to be perfect; otherwise, 300+ ms between (simple) stimulus and (simple) response is more typical.

Obviously, a lot of this is happening asynchronously, and high refresh rates can help in other ways (e.g., by smoothing out movement), but it astonishing how laggy our visual system is.