Well, it's official. Our 13 year old Shih Tzu, Tessa , is almost completely blind. She been having eye problems for years, beginning with a freak accident when she was 3 that caused her left eye to bulge partially from the socket making incapable of producing tears. She's had glaucoma for a while now, but it's gotten so bad that her vision is almost gone. But she still finds her way around the house, although she occasionally walks into things.