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BioMed Research International
Volume 2013, Article ID 324234, 8 pages
Clinical Study

Medium-Level Laser in Chronic Tinnitus Treatment

1ENT Department, Regional Hospital, Endach 27, 6330 Kufstein, Austria
2Pradlerstraße 4, 6020 Innsbruck, Austria
3University ENT Hospital, Paracelsus Private Medical University, Müllner Hauptstraße 48, 5020 Salzburg, Austria
4University Hospital of Otorhinolaryngology, Innsbruck Medical University, Anichstraße 35, 6020 Innsbruck, Austria
5ENT Department, S.D. Asfendiyarov Kazakh National Medical University, Almaty 050012, Kazakhstan
6Department of Medical Statistics, Informatics and Health Economics, Innsbruck Medical University, 6020 Innsbruck, Austria

Received 12 April 2013; Revised 17 July 2013; Accepted 18 July 2013

Academic Editor: Koji Kawakami

Copyright © 2013 K. Dejakum et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The purpose of this study was to evaluate the effect of medium-level laser therapy in chronic tinnitus treatment. In a prospective double-blind placebo-controlled trial, either active laser (450 mW, 830 nm combined Ga-Al-As diode laser) or placebo irradiation was applied through the external acoustic meatus of the affected ear towards the cochlea. Fourty-eight patients with chronic tinnitus were studied. The main outcome was measured using the Goebel tinnitus questionnaire, visual analogue scales measuring the perceived loudness of tinnitus, the annoyance associated with tinnitus, and the degree of attention paid to tinnitus as well as psycho-acoustical matches of tinnitus pitch and loudness. The results did show only very moderate temporary improvement of tinnitus. Moreover, no statistically relevant differences between laser and placebo group could be found. We conclude that medium-level laser therapy cannot be regarded as an effective treatment of chronic tinnitus in our therapy regime considering the limited number of patients included in our study.