Your eyes can water for a number of reasons but essentially the degree of tearing is a balance between tear production and tear drainage. Tears are produced in the lacrimal glad which sits just inside the orbit beneath the tail of the eyebrow and drain diagonally across the eye to 2 drainage channels near the inner corner of the eye. From here the tears collect in a sac on the side of the nose before emptying down the nose to the back of the throat.
Blockages of the tear drainage system are common and can occur anywhere along its length. Sometimes the opening of the tear duct can be very small such that it prevents tears draining freely. This can be enlarged by a short local anaesthetic procedure which is often complemented by the insertion of a temporary silicone stent to prevent the opening shrinking down again.
Blockages further down the tear drainage system may require more invasive surgery to create a new passageway for the tears to get to the back of the nose. This is undertaken under a general anaesthetic and in most patients can be undertaken using a small camera up the nose.
Being examined by an experienced oculoplastic surgeon will ensure that the cause of your watering is identified, and the correct treatment or operation is recommended for you.