Dogs adjust amazingly well to blindness - unlike us, they don't mourn for anything they have lost, and just accept what IS.
We adopted out a husky who had both eyes removed. I saw him last week and you would never know he was blind.
Dogs' vision is not all that great anyway, and they rely much more heavily on scent and sound.
I think you'll be truly astonished at how well your dog will do, as long as you don't constantly rearrange the furniture!