This massage uses gentle pressure to increase hydrostatic pressure in the tear duct system. The goal is to pop open the membrane at the duct’s exit (the valve of Hasner) or to propel debris and mucus out of the blocked duct, restoring natural tear drainage.
By occluding the upper drainage system with the finger and compressing the sac, fluid is forced downward into the duct. This pressure can rupture the obstructing membrane. nasolacrimal massage