i look such stuff up here:
http://www.owalreptiles.com/issues.php its the best summary of morph issues ive seen so far.
so its just the eye issue, nothing else. and as others mentioned, its not passed on to the offspring. So if you breed a super lesser to lets say a phantom or mystic or super mystic, all offspring will be healthy and you will get healthy high-white BELs as offspring. So for breeding they are quite awesome, if you dont breed to other butter/lessers but to anthing else from the BEL complex, like mystic/phantom or mocha or russo or mojave, you hit healthy BEL-combos with 50% or 100% odds.
and even if they go blind (many dont), they still do fine in captivity, heat pits and their sense of smell compensate to a degree. Blind BPs have a reputation of being healthy and good pets.
i would say, if you want to produce some for breeding, as keepers, go for it.