I once dreamt that I was blind, i wasn't lucid or anything, it was freaky, the dream consisted of me hearing my family members telling me how I lost my sight in an accident. If I get to know a blind person that has been since birth, I will certanly ask him to see what he has to say. Now a person that lost their sight been old or halfway trhu life would probably dream both ways I guess, on one dream blind, and on the other not, would be great for lucid dreaming since if your not able to see and wake into a dream seeing you should figure it out, am i dreamin?