Yep, fortunately so far, I have only had to use it a few times too, most of the times, I just put it in the water, injections are just for bad looking birds, mild illness just gets it in the wter, I hate catching the big uns!
That is a mycroplasma infection of the respritory system (Chronic Respritory Disease) The eyes swell because the sinus cavity runs under them. It takes a few week to get them over it (no quick cure) and it is very contagious. Tylan is great for it, as are all tetracycline based anitbiotics. Get...