Nasolacrimal occlusion

nasolacrimal occlusion

Nasolacrimal occlusion means gently blocking the tear drainage passage at the inner corner of the eye so that fluid stays on the surface instead of draining into the nose. It is usually done by pressing with a finger just beside the nose where tears drain, or by closing the eyelids gently while supporting the area. This simple action is done right after putting in an eye drop and may be held for about one to two minutes. Blocking drainage keeps more of the medicine in the eye, which can increase its local effect and reduce the need for frequent dosing. It also lowers the amount of drug that runs into the nose and throat, which helps prevent unwanted side effects elsewhere in the body. The maneuver is especially useful for people taking drugs that could cause problems if absorbed systemically, such as children or people on multiple medications. It is easy to learn and does not require special equipment, but care must be taken to avoid pressing too hard or causing discomfort. If someone has blockages or infections of the tear drainage system, they should check with a clinician before using this method. When used correctly, it is a low-cost way to get more benefit from eye medicines and to make treatment safer.