Although not alot of information is readily available, for those interested or concerned good information for you and your vet/eye specialist can be found at:
under Curly Coat Syndrome or Eye Conditions.
Pups born with this condition look slightly different than other pups/siblings in the same litter and experienced, knowledgeable, caring breeders normally spot them and kindly PTS.
Many do however slip through and get sold into pet homes where constant care and attention is needed to keep the dog somewhat comfortable.
Dry Eye/Curly Coat is a nasty genetic inherited condition, both parents need to carry the genes and not neccessarily be affected themselves to have affected off-spring. The ratio of pups born in the litter which will be affected is totally unpredictable.
If at all concerned then you need to see your vet. The eyes are a very good indicator of this condition and can be tested with a tear test to start a diagnosis.
Alison, Wilts, U.K.