weve only had a couple with it, if you carefully unroll the eyelid after birth usually does the trick, if it wont go back see kaz comments re clips on a previous post (ryelands) we had to take 1 to the vet and had fluid injected in bottom lid to create a bubble which stops lid turning in, sorted with 1 injection, if you get a lot of entropion its recommended to change the ram, think the clips are called michel clips................