If the duct is blocked, the tissue is likely to be irritated and fragile. Using a metal cannula may damage the lacrimal sac and nasolacrimal duct; a safer alternative is a soft Teflon catheter (Fig.

The term functional nasolacrimal duct obstruction (FNLDO; watering with patent drainage) is misleading as it implies occluded drainage and solely nasolacrimal duct pathology. 'Normal' tear ...

This can include both your natural tears and artificial tears. Punctal plugs are also called tear duct plugs or lacrimal plugs or occluders. Tears help to keep your eyes comfortable. When you have ...