IDK if this is a trait of piebald fishes. I've never owned one and I've not seen enough of them.
In general, cloudy eyes can be either due to water (the fish may be getting used to new water or the water is too hard or something else is unsuitable with it, pH for instance), or some type of a problem - bacterial infection or something lacking in the diet, certain vitamin or mineral.
If it behaves well and shows no other problem symptoms, eats well, then I'd just observe closely and not worry yet.
I've not heard of cataracts in fish except some people thinking that some of their very old fishes (e.g., 25-30 year old synos
http://www.planetcatfish.com/forum/viewtopic.php?f=8&t=30928 ) have them but I'd like to learn more for sure.