I noticed in the photograph that all the dogs were squinting. That may not mean anything in itself but I do know that light pigmentation in human eyes correlates with higher light sensitivity.
I had never read that high-white piebald has a higher risk of deafness. That is interesting. I do know that White German Shepherds were regarded as inferior. I wonder if possible deafness has anything to do with that. I do know that darker eyes are desirable, again possibly for having a higher tolerance of bright light.