where did you get the idea that just because at your house one eye reacts mean it is an allergy!? not necessarily. Don't go nuts about trying to figure out what he could be allergic to, you'll go crazy and get too much fur on your black work clothes. He probably just needs some teramycin in that one eye (oh yeah like I am a vet all of a sudden). But for real, don't knock yourself out over his eye. Tell the vet (the real vet) and get the eye ointment necessary). sometimes eye ailments come with a uti- it is an infection so it is normal. I hope one of those "techs" didn't tell you he has an allergy when he hasn't even been tested for such (for heavens sake). sorry if I seem riled but i don't want to see you wasting your time and money...