Here is a picture of a double merle/Double Dilute (lethal white) smooth Collie who is blind and deaf.... he actually has no eyes. I know the person who owns him.




Also I knew a person in Ohio a while back who had several danes... he had 2 that were pretty much solid white (one lived to be 14yrs old, even after he bloated at age 10 - and he was HUGE even for a Dane!) but neither of his white danes were deaf or blind.

Janna