I was wondering why my cat has so much sleep in her eyes. Her litter is clean, I dust and vaccume most days. Yet ,there seems to be an excess of eye snot particularly in her left eye. I have started washing her little face with a warm washcloth. Don't need to tell ya how much she hates that. She's gettin' used to it though. Does this just happen to senior cats or is there a reason. She just got her shots at the vet but I forgot to ask about it as they were very busy that day. I know it's no big deal but I was wondering....