Dogs adapt so well if they go blind as long as you leave everything the way it was when they could see. My cousin had a blind Bichon that lived happily for 4 yrs after she went blind. The family just made sure they didn't move stuff around and they did talk to her so she would follow their voices. I had no idea she was blind until my cousin told me, she was going around the house as usual, didn't act different at all.