Myringotomy is a procedure where a deliberate incision is made in the eardrum to allow drainage of fluid/pus that occurs in middle ear infections. This is usually accompanied by the placement of a tube (Grommet tube/myringotomy tube) to maintain a connection across the eardrum to allow air to pass directly from the external ear to the middle ear (ventilation).
Myringtomy allows the middle ear to function normally while awaiting the resolution of the underlying infection e.g infection of the adenoids or sinuses. Hearing is also immediately better once air is restored to the middle ear. This is especially important for young children who are at an age where they are still developing their speech abilities.