One of the cats at the barn I ride at had kittens about five to six weeks ago. Last week, they were all doing fine and figuring things out. Tonight, I noticed that one of them is considerably smaller than the others and his/her eyes are sealed shut with yellow discharge and it's also on the nostrils. My instructor only bothers vetting the horses, her indoor cats and her two dogs... so I'm hoping someone here has some advice or is able to tell me if there is a way to treat something like this by yourself or if it'd require antibiotics. I'm assuming the lateral but I figured it wouldn't hurt to ask. Thanks!