I really feel for you. We had a pair of blind lambs this year. I think they got chilled - we lamb outside - and maybe they had brain damage. But we brought them in to the house and had them in a haybox by the rayburn and eventualy they regained their strength after a week enough to go back outside and into the barn with mum. Amazingly she took them back, even though they had no concept of her as mum and she was by then dry. We fed them every four hours, all through the night for two weeks then down to three times a day eventually. They grew, prospered, got quite strong. They went outside into the straw yard with other lambs and tried to play with them but kept getting hung up on hurdles or crashing into things. We'd rescue them out of the water trough and put them in the barn again at night. Finally, one awful afternoon, We found one drowned in the water trough. My wife cried her heart out. I took the other to the vet and had it put down. She fought the injection with a real desire to stay alive and I felt like a complete brute, but I could not let her face life without her sister and worry she was going to die anytime. Once before we ahd a blind lamb but he had a sighted sister and they went everywhere together quite happily and it was fine, but this, well, this was just too stressful. It was the worst moment in 15 years sheep keeping, so like I say, I really feel for you. Sorry