What does the breeder say? Is this a problem with the parents or grandparents? Previous litters? Has the puppy had its tear production and tear duct function tested?
Some breeds are more prone to this than others, and while it's occasionally associated with other problems (like an eye infection or blocked/non-functioning tear ducts), it's often more aesthetic than medically significant. But a responsible breeder will know if it's common in their lines and if it tends to resolve as the pups grow or is a lifelong concern.
Either way, any pup should have a health check ASAP after coming home, and a good breeder will have some kind of contract or guarantee in regards to health issues.