A method and device for nasolacrimal duct occlusion during eye medication provides a device having a pair of joined legs terminating in angled elements for fitting into the medial canthal area and compressing the nasolacrimal ducts. The device is placed over the nasal bridge during, and for a short time...http://www.google.ca/patents/US5522837?utm_source=gb-gplus-sharePatent US5522837 - Nasolacrimal duct occlusion device and method
