Actually, in many species, they do have visual fields that overlap, and use their binocular vision for catching prey. Obviously is this going to be more the case for something like a tree frog than for a burrowing species like a chubby frog.

As far as the distance they can see, I'm not familiar enough with the literature to know of any studies, but I know from my own work on frog jumping that some species can accurately target objects up to 5 feet away.