I've been searching for an answer to this question but have had no luck. Does anyone know how far a frog can see? I know they see in color, their eyesight doesn't overlap, they use their eyes to swallow but how far can they see?

My Whites have recently got new neighbors, two Eublepharis Macularus aka Leopard Geckos. They seem to be ENTRANCED by their new friends. They will sit on the side of the tank closest to them for hours and seem to stare at their tank. Now the geckos tank is a about a foot and a half away and set a little lower than the frogs are. So it makes me wonder can they really see the geckos or are they just fascinated with the light and movement? They also have a beta fish that sits about 2 feet away on the other side of their tank and every now and then I catch them staring at her.