Devices that are used to prevent or eliminate the negative effects of hearing loss in individuals with hearing loss and that enable the person to hear at the level they need are called hearing aids. In order to be able to give a hearing aid, the type and degree of hearing loss should be determined by audiological tests in health institutions. According to the results of the tests, a device suitable for the loss of the person is recommended.

 

Source:  http://www.kbb.org.tr