I've noticed my mare frequently has one goopey eye. The discharge is white or beige. A typical color. But the other day she had it in her upper lashes too so obviously the goop was thicker that day.
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.