One of my chins gets a cronicly irritated eye, about every other month his eye gets puffy and we flush it out with artificial tears and in a few days it goes back to normal. There's never any pus, so I don't think it is infected and it's always the same eye, although we have treated him with antibacterial eye drops in the past with the same results as the artificial tears. Whenever we examine him there always seems to be some type of irritant, some dust or some loose fur in the eye that's causing the irritation, what I'm not sure of is why he is unable to flush these out himself. What I'm thinking is that he has a blocked tear duct, which there isn't going to be anything we can do about it other than try to proactive treat it with artificial tears. Has anyone else encountered anything like this?