I sure hope that it's not contagious. My cat Pepper's right eye has been tearing for a few weeks now. It doesn't seem serious and it doesn't look like your kittens either. Anyway he goes to the vet on July 12th for his annual checkup and shots so I guess I'll find out then. He's also acting normal except for this. It may only be allergies. I sure hope so. Good luck with Patches. Keep us posted.