Milo has an eye infection, vet agree he is likely to have caught it from me as I'm still suffering with one, and he does lick my face most mornings to wake me up (this is also when my eyes are at their worst)
Alice checked for scratches and there wasn't any but the eye is inflamed, we've got fucithalmic (same as me). This is what we also had for Milo when he had the same thing back at the beginning of the year.
Jess is showing no signs of it, despite giving Milo a head lick when we got home.
I'm quite sure that he has a simple unforunate eye infection, and scare mongering isn't really helping the situation.