utonagan pup is blinking more with left eye, eye looks slightly smaller, no discharge, no rubbing. Has had 2 x treatments to rule out infection - no difference. Vet thinks tear duct problem - dye took ages to drain from eye to nose. He couldn't actually see the duct which is worrying. Any suggestions to help unblock duct naturally (hoping that's all it is!) as vet has suggested specialist which would mean anaesthetic & risks. Advice really appreciated