one of my hens looks to have an infected eye, I have been using vetericyn but not as much as I should of been I admit. her eye looks worse today. the eye is half closed and looks kinda white in color, and the red skin around the outside of the eye is very swoolen but it does not seem to have a fever in it, not hot to the touch,. should I give her some oral antibiotics? she is multing I went to grab her and pulled out a bunch of tail feathers poor dear she is very sweet and I hate to see her suffer this way. it does not seem she can even see out of the eye. we had a duck with a simmaler thing one time but it had a lot of discharge out of the eye and our chicken does not have any discharge coming out of the eye. what the heck is going on, any ideas?