Did you know it's OK to joke about blind people. It's not like they'll see it coming.
Do you enjoy focusing your jokes on blind people?
The best is if they don't know you are joking. Good time
You shouldn't make fun of people with a disability. It sounds like you think it's okay, but would you make a joke about blind people if they were your friends or family? There are a lot of jokes that are funny that don't rely on harming others, you should try to tell jokes like that.