I got 15 new hens. They were 3weeks old when I got them. They are now 8 weeks old. I had an outbreak of coccidiosis. I put them on Corid and they all began to get better. I have them on a low dose as some droppings still have blood. However I noticed one hen closing one eye and keeping it closed most of the time. So I removed her from the rest and have been flushing her eye and using Neosporin. There is no signs of mucus, dirt, cuts, bumps or abnormalities around her eyes or head. The next day she was closing both eyes and only opening them when she needs to. She is eating and drinking plenty and her poops look good. She is however lethargic other than that she isn't showing any other signs or symptoms. No coughing etc. I have her inside and have been cleaning her eyes and been giving her Duamycin IM but have seen no improvement. I have had hens before but have no idea what is wrong with this hen and was hoping someone might know what could be wrong?