Brought both the cats (aged 2.5) in earlier today for their dinner - they got out during the day and stay in at night. Was just stroking one of them and I've noticed he has a really weepy eye - his white fur around the eye has brown/bloody? streaks and is all wet. I can't see any sign of a cut or anything, so I'm assuming this must be some sort of infection. He seems otherwise well - ate his dinner etc etc, and the eye doesn't look gummy or particularly sore. He's not rubbing it especially, nor is he sitting with it shut (a favourite trick of his drama queen sister!).
Is it alright just to leave it? Should I try wiping the eye with cooled boiled water or something? Is this the kind of thing that needs a vet appointment or ok to wait and see?
Sorry - first time cat owner and more PFB about them than you could imagine!