What are punctal plugs?

Punctal plugs are used to treat dry eye. They are tiny plugs that are made of either collagen or silicon and are gently inserted in the drainage canal so that tears can retained longer in the eye and keep it moist. Punctal plugs are easily placed in the drainage duct and are not uncomfortable. Silicon punctal plugs are permanent whereas punctal plugs are dissolving and temporary. You cannot see or feel the punctal plugs once they are inserted.