I have never had a dog who is blind but I wanted to drop a line. I am sorry that your dog is now blind. My grandma was blind and now my mom is half blind. I have seen them having so much struggle, so I can understand how hard it might be for your dog. I did a little good search.
http://www.blinddogs.com/ this site seems to contain good information. There seem to be groups of people who care for blind dogs. I hope it is helpful for you.
It must be hard for you to see him struggle but with your love I am certain that he can overcome his hardhip!