I would wonder - is it truly excess secretion of tears or, rather, inability for the tears to drain into the nose, because a duct is blocked? I think it takes an ophthalmologist to diagnose and treat, if that's the condition. Don't know much more. One of my grandchildren has a blocked duct like that, and her parents haven't felt a need to have it corrected. Maybe one can outgrow it, given time. (Though it doesn't sound as though your acquaintance has quite the same condition.)