It's been around two weeks. I have a hen that has a swollen eye. It has clear drainage. Today I noticed a white dot on the eye. She does not have a cold. I took her to the feed store when I first noticed it. They suggested Antibiotics that I put in the water. As well as, electrolytes and vitamins. I have kept her in the house the whole time. She scratches her eye and shakes her head often. I believe this is conjunctivitis. None of my other chickens have any ill signs. I'm looking for suggestions on how to treat.