We have a gorgeous working cocker spaniel who is amazing. He’s 18 months old and around 6 months he started to have tears running down his face. We have used cooled boiled water, eye drops to rule out infection, piraton and then the vet gave us stuff that I thought was going to be new drops but dh picked it up without questioning and his just a solution to clean tear stains (which he doesn’t have as the liquid is completely clear). Is there anything we can do to prevent or reduce it? None of his siblings or his mum and dad have this so can’t go on other’s experience.