One approach to treating dry eyes is plugging the openings to the tear ducts with tiny silicone plugs (punctal plugs). These plugs close the tiny opening (punctum) that you have in the inner corner of your upper and lower eyelids. The closure conserves both your own tears and artificial tears you may have added.
Punctal plugs come in temporary or permanent options. Temporary plugs are made of a collagen material that can dissolve in a matter of weeks or months, while more permanent plugs are made of a more durable material that can last for years at a time.