He doesn't seem to be squinting heavily, but maybe a little. He blinks it. When I try to touch it, he will let me, but he flinches a little. Now that I look closer, the bulge seems to be directed to the lower lid and in toward the inside corner of the eye (like where the tear duct would be?) and that is all puffy and bulged. The white part on the inside corner is very red and actually lumpy looking.
Now that we are looking closer, his cheek is swollen, in comparison to the other cheek, so I am beginning to wonder if your first diagnosis was correct! The actual swelling that I am calling the "cheek" is back just in front of the ear, so i guess it's not really the cheek.
He has had both of the "large" back teeth removed a few years ago, our vet said those were the most common to go, so we thought this problem would not occur again...!
My poor dog! He has been wearing a cone due to the problems with the left eye for 1.5 weeks, being poked and prodded and cut, etc.!
Oh and FYI he is currently taking Rimadyl for pain, so that could be helping that when i touch it he doesn't act like it hurts terribly.