Some of the functions of tears include lubricating the eyes (basal tears), removing irritants (reflex tears), and also aiding the immune system. [6] Tears also occur as a part of the body's natural pain response. [7]
Your tears clean your eyes and keep them moist. Read about tears and what can go wrong, like too many tears, too few tears, or tear duct problems.
Tears are produced by the main and accessory tear (lacrimal) glands and collected in ducts at the inner corner of each eye. From there, they drain into the nose.