It only happens in one eye (always the same eye) and otherwise she has no swelling and doesn't seemed bothered by it. The cornea is clear and there is no redness that I can see. No runny nose either. It's infrequent that I will see no goop in it though.
Just wondering what is causing it or what it might be. Originally I thought it might be flies but now that it is cold, there are no flies out.