The whites of my little Sammy's eyes are brown in places. He also has thick clear discharge coming from his eyes that I am constantly having to wipe way. I have taken him to our vet and she says that since the discharge is not yellow or green that I should not worry and that the discoloration my be just how his eyes where meant to be. She did do a tear production test on him which came out totally fine. Has anyone experienced this type of discoloration before? I do trust my vet, but I just can't help being a worried mom.