I just got two kittens on Sunday. While they are slowly but steady getting used to the nwe environment (and to me, though this is really happening slowly, especially for the smaller one who seems to be very shy).
When I visited the cats the eyes of one of the kittens looked normal, so there was suddenly some liquid in one of his eys. I asked if there was a problem, and the owner said no, there is no infection.

Now a few days later I see a bit thick liquid near the eye, and the the area between eyes and nose looks a bit strange, like an infection. Charlie has no pain, is not making any noise, though I wil get this checked out on Friday when I go to the Vet.
I am just wondering, is there any guideliens that the current owner must provide the correct information during the purchase (sorry for the hard word), as this is the case with other things like cars. If this is the case, can I make the previous owner liable for the vet costs if any further treatment is required?
My pet insurance starts today or tomorrow, but of course you have the 14 days where you can make no claim,k and just worried that it could involve some high costs to get this fixed (if there is a problem)?

Any help would be much appreciated.

Oh, and is it normal that two kittens from the same mum and same age are quite different size wise? Bobby is quite small, and Charlie is the bigger and far more active one.