1. The removal of fluid (often infected) from the middle ear space by creating a incision in the eardrum.
2. A surgically placed tiny incision in the eardrum so any fluid behind the eardrum can then drain and usually thickened secretions can be removed.

A small plastic ear tube (a tympanostomy tube) is often inserted into the eardrum to keep the middle ear aerated for a prolonged period of time.