Dog suddenly blind with swollen eyes? What to do next for my pet?

Should the eye ointment not make a difference in his loss of vision, I suggest you take Izzy back to the vet for a recheck. there are quite a few causes of blindness possible. Ask your vet about testing for tick diseases. we do sometimes see dogs with an ehrlichia canis infection that temporarily go blind. It also may be that she was slowly going blind over the past few years and now finally is totally blind and you just did not notice it before. THis is difficult, but dogs are great. They can get used to being blind easily, and have a few more senses with which they can "see".