I have a chicken who has an eye shut. There's no crust, swelling, oozing, nothing. it's just shut. Her other eye had shut about 9 months ago, and now is open but has an eye-lid colored bump on the lower eye-lid. it maybe has grown slightly since it appeared. there were no other symptoms with that eye either. she seems fine otherwise. i let them out today and she's in the yard with the others. i'm sure her vision isn't real good as her "good" eye has a limited opening. any ideas? i did dust them with Carbaryl last weekend-maybe that got in her eye. hasn't shown up in others. she's about 4 years old. don't know if she's still laying. poops are normal.