Last evening I noticed what appeared to be eye discharge trails from one eye on the face of one of my 500lb calves. This wasn't one small trail, the trail area was about the size of my hand which I thought seemed like alot. This is a steer calf in a 80x80 feed pen with 2 other similar calves. This morning I noticed no more trails but a small amount of white stuff having settled on the bottom of the eye lid. Any opionions on whether I should be treating this or not, or are there other symptoms I should be looking for ?