Thank you all for the encouragement! I found this article online...

"It is also important to realize that it is OK to grieve about your pet's vision loss, but you must not put your sad feelings in your dog's head—they aren't really there! Your dog is not suffering. They adjust well to their vision loss, and it is by far hardest to deal with on the owner's side. Your dog's job description has not changed. Your blind dog is happy as long as its routine is stable. From your dog's point of view, life continues to be great-- you are there as always, and they just need to use their other keen senses a bit more to get the same information they used to view."

And I think that describes the situation perfectly. He will still always be my beloved silly boy... but I do miss those hi-fives he used to give me. He always obeyed me because of the hand signal, not my voice command. Hi-five was our favorite trick. And looking back, I remember how in the last several months he started sitting up on his hind legs and using both front paws...maybe because he couldn't see my hand very well? Now he completely ignores my hand. Anyway...enough of my rambling; I'm thankful I still have him.