My 7 weeks broilers was about given me heart attack when there eye started swelling all at ones. I tried anti- biotics like 3 different types even tried anti coryza until I was told of lemon and bitter leaf . I prepared the bitter leaf by squeezing it then squeeze the lemon out too , then deep the lemon shaft inside the concossion then Rob it on there face ... it will disappear immediately then finally after you do the same 24 hours after ..