This is usually due to a plug being the wrong size. Plugs may rub against the surface of the eye or the eyelid, and can even fall out of the duct. This is one of the reasons doctors recommend regular checkups following the insertion.

How long do punctal plugs last?

Temporary or dissolvable punctal plugs usually last from a few days to as long as several months. These types of plugs would be used in circumstances such as preventing dry eyes after LASIK, if you choose to have refractive surgery.

Can permanent punctal plugs fall out?

The most common issue with punctal plugs is that they can fall out. Intracanalicular plugs are the longest-lasting type. They go farther into the duct and can't be seen on the surface of your lid. They can stay in place for many years.