★★★★★
What I have used with success for watery eyes (tears just running down the cheek for no apparent reason) is an eye "bath" with Bilberry extract. I fill a clean eye bath cup with comfortably warm water, put in 8 or so drops of Bilberry extract, mix well (the extract tends to sink to the bottom) and cup it to each eye, looking in all directions so that it'll get everywhere.
This has also helped itchy eyes.