Our Lavender Orp has a swollen eye. She has always dealt with an upper respiratory infection, probably chronic (she is a pet, though a good layer) and we had to hand raise her through some severe health issues as a pullet. But a couple of weeks ago we noticed one eye was swollen. Our standard treatment when she gets 'bubbly eyes' is to rinse with saline, treat eye with Vetericyin, and dose her with Tylan (2 x a day, she takes it orally, .3 cc per lb so about 1.2 cc). This hasn't worked this time though. We did a 5 day round, no change. Now trying a 10 day round. Picture attached. The eye has a nasty yellow thing at the corner. She is eating normally, active and cheerful. Would like to help her clear this up.