I have a Min Pin that is about 2 yrs old. She has been having eye trouble and the Vet doesn't know what is wrong. Her eyes are itchy, and one swells. She scratches them and keeps them closed a lot. One of her eyes gets a film over it from time to time, that must be wiped with a warm towel. Does anyone know what is the problem, and how to fix it? I am using medicated drops now, but they irritate her eyes even more.