We switch from Royal Canin to Blue with life protection
BLUE Healthy Dog Food and although Joey liked it on the second day his eyes started running badly. They were filled with brown goopy stuff. I didn't even think of the food at first and kept him on it and his eyes got worse. I took him off the food and his eyes got better within 24 hours. We tried it again a month later and the same thing happened. So now we are back with Royal Canin, and thankful to have a food that doesn't cause teary eyes.