Blocked tear ducts—also called nasolacrimal duct obstruction ... Other symptoms may include discharge, itching, and pain.

is misleading as it implies occluded drainage and solely nasolacrimal duct pathology. 'Normal' tear dynamics cannot be defined, comprising of a complex interplay of tear production, evaporation ...

such as allergies or blocked tear ducts, to more severe conditions, such as organ failure. If a person has swelling under the eyes or puffy eyes, difficulty breathing, or severe pain, they should ...

A blocked tear duct is a partial or full blockage within ... such as double vision, pain, or a change in vision. The treatment for watery eyes will depend on what is causing them, which is why ...