The Levo System software displaying the integrated Tinnitus Functional Index (TFI) questionnaire

The Tinnitus Functional Index (or TFI) is exclusively integrated within the Levo System. Developed as a collaborative effort among researchers and clinicians to develop a standard questionnaire, the TFI is an evaluation that measures the level of negative impact tinnitus has on a patient. It can also be used pre and post sound therapy to determine changes as a response to therapy.