Ear discharge (otorrhoea) is common in 25–75% of children after grommets are inserted. Treatments to prevent this discharge before it occurs should be limited to children who have a higher risk of otorrhoea and it is not clear which preventative treatment is better. The risk of having persistent tympanic membrane perforation following the procedure may be low, and has been estimated at 2%. Other adverse effects are estimated at: blockage of the<unk>  (7%), formation of granulation tissue (4%), grommet falls out too early (4%), and the<unk>  may move towards the middle ear (0.5%). There is also a risk related to general anesthesia. Long term effects include visible changes to the tympanic membrane. These changes usually resolve on their own and do not usually require medical treatment or result in hearing problems that are clinically significant.
Tympanostomy tube
Tympanoplasty
Cragie tube
Mastoidectomy
Ethmoidectomy
Middle ear implant
Tympanocentesis
Iridodonesis