That's very informative, thank you! I read on cat herpes before, but I don't think that's it - there's no goopy liquid (or any liquid for that matter) coming out of their eyes, they are just cloudy inside... I've been here for almost two months now, and there have been no changes whatsoever. Maybe they had it before and it resulted in a permanent eye damage? No idea. Those are not exactly strays, apparently they have been living and roaming freely on the grounds of the landlord and he fed them too, but it doesn't look like anyone cares for them otherwise. So if things get worse, I'll definitely bring them to the vet, but they seem fine to me... Considering how they want to play, eat and bother me all the time