
Weeping eyes can generally be from an allergy, conjunctivitus or other type of infection. I would definitely take advice from a vet. Normally the vet will put a few drops of iodine into the eye and then check the eye with a special apparatus in a darkened room to ensure that there are no scrapes etc. Apparently this type of equipment can see to the back of the eye too.
I have read previously that sometimes eyes will weep if they have a build up of toxins in the system and they are being given more food than the body requires. It is sometimes the bodies way of eliminating excess.
Let us know how he gets on.
xxx