RESEARCH

PHOTOBIOSTIMULATING LASER LIGHT - SCIENTIFIC EVIDENCE
Photobiostimulative treatment studies in LASER medicine have been conducted since 1961. There are approximately 3,000 studies concerning the positive biostimulative effects of LASER light. There are more than a dozen studies supporting the positive treatment effects on tinnitus and there are dozens of studies supporting positive effects on hearing and balance disorders.

TINNITUS AND HEARING IMPAIRMENT RESEARCH WITH LASER THERAPY
Research is never conducted on an average population of individuals with a certain disease or dysfunction. No study can be perfectly conducted and carried through. Medical studies are always based upon unique individuals and for tinnitus there are more than 500 known causes for the symptom. It is therefore difficult to precisely decide the actual cause for the symptom. Careful examination and differential diagnosis are the basic foundations for a prosperous therapy. LASER therapy is adapted to the individual. It demands a rigorous examination of the patient and very good knowledge about the treatment methods suitable for the actual disorders.

In 2002, Michael Zazzio started a global academy for specialists in the field of LASER treatment of hearing and balance disorders and neurological abnormalities. The aim of the academy is to connect specialists so that they can share knowledge and clinical experiences. Neurological & Audiological Laser Medicine Consensus Academy, NALMCA, is the name of the academy, which consists of medical researchers, specialist doctors, and many more categories of medical staff with experience and knowledge in LASER therapy with medical LASER. Another aim of the academy is to speed up the development of new diagnostic and therapeutic methods so that better results can be achieved in treatment and research.

Alí Kolayliogly, ent specialist from Turkey, was in May 2001 visiting Michael Zazzio at the Audio Laser-Kliniken, Lutz Wilden in BadFüssing and Miroslav Procházka in Prague. Alí has ever since been treating inner ear disorders with LASER therapy. During year 2006 Alí Kolaylioglu contacted the ent research institutions in Turkey and asked them to conduct a tinnitus treatment study using LASER therapy. The doctors Gungor, Dogru, Cincik, Erkul and Poyrazoglu at the Hydarpasa Military Hospital conducted a positive Gold Standard study.

A. GUNGOR, S. DOGRU, H. CINCIK, E. ERKUL, F. POYRAZOGLU
POSITIVE GOLD STANDARD LASER THERAPY STUDY ON TINNITUS TREATMENT
PROSPECTIVE, RANDOMIZED, DOUBLE-BLIND, CONTROLLED TINNITUS STUDY

At the department of otorhinolaryngologi at the Haydarpasa Military Hospital in Turkey the researchers used a 650 nm LASER. The LASER light was administrated daily for a week. The patients evaluated their tinnitus symptoms on a 5 point scale. The study included 66 ears on 45 patients on patients suffering from chronic unilateral or bilateral tinnitus. Evaluation was made before and two weeks after finished therapy. The improvements were in the functional LASER group as follows: 48.8 % had less loudness, 57.5 % had less duration, 55.5 % had a lower degree of annoyance. No significant improvement was obtained in the placebo group. The research team concludes that the LASER method is useful for the treatment of chronic tinnitus.

D. CUDA & A. De CARIA
POSITIVE GOLD STANDARD LASER THERAPY STUDY ON TINNITUS TREATMENT
PROSPECTIVE, RANDOMIZED, DOUBLE-BLIND, CONTROLLED TINNITUS STUDY

At the department of otorhinolaryngologi and tinnitus at the Guglielmo da Saliceto hospital in Piacenza in Italy the doctors and researchers used a similar 650 nm LASER for the treatment of tinnitus as used in the study conducted by Gungor et al in Turkey year 2007. In Cuda's and De Caria's study LASER therapy was combined with counseling according to the TRT method. The treatment at the hospital in Piacenza went on for three months and 61.5 % of the patients in the functional LASER group got an improvement of their tinnitus. In the same LASER group 3.8 % experienced a worsened tinnitus. The patients in the study had at least for three months been suffering from chronic continuous tinnitus related to cochlear pathology. Patients with psychiatric diseases were excluded and so were patients who were on medications that could be suspected to cause the tinnitus symptoms. The study was prospective, controlled, randomized and double blind. The control group consisted of patients receiving counseling according to the TRT model and placebo LASER (non functional LASER). In the placebo group 35 % had improvements on their tinnitus symptoms while 20 % experienced a worsened tinnitus. The difference between the groups is significant, p<0.01.

M. ZAZZIO - SCIENTIFIC ARTICLE – THE TREATMENT OF HYPERACUSIS

Michael Zazzio at the Audio Laser-Kliniken has conducted a clinical study on hyperacusis where the pain thresholds were measured using audiometry before and after the treatment. After completed therapy the pain thresholds were improved for all of the 48 patients in the group. In this second group 83 ears were treated and all of them (100%) displayed improvements. The largest measured average improvement for one ear was 40 dB including all frequencies regarded as “hyperacusick” before the treatment. An average improvement of 10 dB or more was found in 83.13% of the ears. 444 observations were made and 417 of them improved with up to a maximum of 65 dB. The average hyperacusis improvement (pain threshold improvement) per ear was 15.37 dB, and per observation it was 15.26 dB with a median per ear of 15.00 dB.

Long term follow up 4-6 months after finished therapy consisted of an audiometric hyperacusis test. 13 ears were randomly measured. The 80 observations that were “hyperacusick” before therapy had been improved for 79 (98.75%) of the observations. The average improvement per observation was 23.19 dB. Every ear improved at least 10 dB on average and the best average improvement was 40 dB.

This study did not include any control group, but the expectation for the spontaneous changes among chronic patients suffering from hyperacusis due to sound trauma could be based upon placebo group results from tinnitus studies. It was assumed that up to 40 % of the observations in a tinnitus treatment placebo group can sense an improvement. Based upon that, three chi square tests on the three different groups in this study display that for all observations, p=5.83·10 exp-120. For short term improvements, p=4.1·10 exp-95. For the long term improvements, p=7.67·10 exp-27. The differences are significant.

Audiometric follow up has shown great improvements for all audiometrically examined patients half a year after therapy. The largest improvement for a single hyperacusis observation is 65 dB.

Michael Zazzio has been lecturing about his hyperacusis study at international congresses and symposiums.

RESULT AFTER
LASER THERAPY
HYPERACUSIS (83 ears / 48 patients)
 
Audiometric
measurement
Worsened condition
0 %
No difference: 0 dB
0 %
Improvement less than 10 dB
17 %
Improvement more than 10 dB
83 %

The table above displays audiometrically measured results on 83 ears.

M. ZAZZIO - ADMINISTRATING LASER LIGHT TO THE INNER EAR

In November 2006 Michael Zazzio at the Audio Laser-Kliniken in Sweden irradiated a pig's ear from the outside after dividing the skull of the pig. The tissue sample measured 36 millimeters from the tympanic membrane to the inner incision of the skull. The LASER light passing through the tissue was photo documented. Through the results of the study, it is beyond doubt that LASER light in inner ear therapy gets into the inner ear cochlea through the ear canal, via the tympanic membrane, passing the hearing bones and getting through the shell of the cochlea if the LASER probe is placed correctly and in an optimal position, and if the LASER light is administrated in the right direction.

The LASER used in the scientific LASER light penetration study conducted by Michael Zazzio on the 11th of November 2006 was a collimated 35 mW InGaAlP LASER of 650 nm wavelength. LASER light with a wavelength of just above 800 nm has better penetration ability in tissue than the 650 nm LASER, but the 800 nm LASER light is not as visible to the human eye as shorter wavelengths.

Picture 1.       Photo: Michael Zazzio

This picture displays how the
LASER light irradiates the ear
canal from the outside of the
skull bone. The LASER light is
aimed towards the
inner ear,
which is situated a couple of
centimeters inside the tissue sample. The black wedge-shaped object in
the picture is the LASER probe. 

Picture 2.       Photo: Michael Zazzio

This picture displays the same
tissue sample, but here it is taken
from the inside of the skull bone,
which has been divided halfway
into the brain but still contains
the hearing organ. The red area in
the picture is LASER light irradiating
the part where the cochlea of the
inner ear is found.
 

Picture 3.       Photo: Michael Zazzio

This close-up photography is
taken from the same position as
picture 2. This enlarged photo
clearly displays that the red light
ball inside the tissue is LASER
drowning the tissue in red
LASER light. In this sample it is the
tissue in the area where the hearing
organ (the cochlea) is found.
 

J. OLIVER & P. PLATH - RESEARCH ABOUT TINNITUS TREATMENT

A single blind study was conducted in 1991-1992 and published in 1993 by J. Oliver and Prof. P. Plath. The study showed that LASER therapy in combination with Ginkgo Biloba can have a positive effect on tinnitus symptoms. The study is one of several studies with positive effects using LASER. Ginkgo Biloba (EGb 761) was given to 40 patients, 20 in the LASER treated group and 20 in a placebo LASER group. After therapy 50% of the patients in the LASER group had their tinnitus diminished while only 5% among those in the control group had any relief. The study was published in the medical journal Laser Therapy, 1993, no 5, pages 137-139.

RESULT AFTER
TREATMENT OF
TINNITUS SYMPTOMS
 
GROUP 1
Ginkgo Biloba +
Placebo-LASER
 
GROUP 2
Ginkgo Biloba +
LASER
 
Decreased >= 10 dB
5 %
50 %
Decreased >= 20 dB
0 %
30 %
Free from symptoms
0 %
10 %

The table above displays the results from the study by Oliver & Plath.

M. PROCHÁZKA & R. TEJNSKA - RESEARCH ABOUT TINNITUS TREATMENT

Another controlled, randomized, double blind study with even better results was a study conducted in 1999 and presented the same year at the Florence LASER congress. The study was carried through in Prague by Med. Dr. Miroslav Procházka and Renata Tejnska. The study displays that Ginkgo Biloba in combination with LASER reduced tinnitus completely among 26% of the patients in the study. 36% had their tinnitus reduced by more than half, 19% had their tinnitus reduced by up to 50% and only 19% had no effect at all. In total it means that 81% had a noticeable improvement in their tinnitus and 62% of the treated patients had considerable relief of their tinnitus. In the control group where placebo LASER was used, not one single patient was relieved of tinnitus. In the treatment there were much larger doses administrated towards the inner ear than in any recent blind study. The patients were treated during six months. The patients in the LASER group were treated in three treatment series with ten treatments per series. The randomization was based upon coincidence, which in this case meant that what group the patients would be part of depended on which LASER device was free when they arrived for their first treatment. The patients didn't know if they received true LASER or placebo LASER, and neither did the therapists. The LASER manufacturer Medicom revealed what was LASER and what was placebo LASER after finishing the study and breaking the code. The study has been published on the Internet together with many other controlled LASER studies.

RESULTS AFTER
THE TREATMENT OF
TINNITUS SYMPTOMS

  

GROUP 1
Ginkgo Biloba +
Rehabilitation
    

GROUP 2
Ginkgo Biloba +
Rehabilitation +
Placebo-LASER
GROUP 3
Ginkgo Biloba +
Rehabilitation +
Functional LASER
 
No effect
29 %
26 %
19 %
Less than 50 % lessening
44 %
48 %
19 %
More than 50 % lessening
18 %
26 %
36 %
No more tinnitus
9 %
0 %
26 %

The results of the controlled, double blind LASER therapy study conducted by Miroslav Procházka & Renata Tejnska.

M. PROCHÁZKA & A. HAHN - RESEARCH ABOUT TINNITUS TREATMENT

In Comprehensive Laser Rehabilitation Therapy of Tinnitus: Long-Term Double Blind Study in a Group of 200 Patients in 3 Years Miroslav Procházka, Med. Dr., Private Rehab Clinic Jarov, Prague, CZ and PhD, Med. Dr. Aleš Hahn, Head of the ENT Clinic, FNKV Faculty Hospital, Prague, CZ present even better results than in Procházka and Tejnska's first tinnitus study. Procházka and Hahn's study is carried through over a longer period of time and also includes many more patients than the first study. The second study also displays that patients getting a small but obvious positive treatment effect after one treatment period in many cases get an improved treatment effect after repeated therapy. These therapeutic experiences are shared by all doctors who are today using the LASER therapy method on inner ear patients. Aleš Hahn has also conducted a LASER treatment study on tinnitus symptoms. A link to this extended tinnitus study by Miroslav Procházka and PhD Aleš Hahn is found at Laser Partner.

RESULTS AFTER
THE TREATMENT OF
TINNITUS SYMPTOMS

  

GROUP I   (6 months)
Ginkgo Biloba +
Rehabilitation +
Functional LASER

GROUP II   (3 years)
Ginkgo Biloba +
Rehabilitation +
Functional LASER
 
No effect
19 %
16 %
Less than 50 % lessening
19 %
15 %
More than 50 % lessening
36 %
43 %
No more tinnitus
26 %
26 %

The table above displays the results of the controlled, double blind LASER therapy study on tinnitus symptoms conducted by Miroslav Procházka & Aleš Hahn.

Miroslav Procházka is lecturing about the LASER therapy method for the treatment of tinnitus. He is also reporting his observations in tinnitus treatment in Case Histories of Patients Suffering from Tinnitus Treated by Comprehensive Rehabilitation Therapy Including LLLT.

M. QUITTNER - RESEARCH ABOUT TINNITUS TREATMENT

Mark Quittner, in a clinical study during the summer of 2004, treated 32 patients whose tinnitus symptoms were evaluated before and after therapy. In the study 29 (91%) of the 32 patients had diminished tinnitus symptoms after repeated LASER treatment sessions. The best results were found among the patients who received 240-480 J. The article describing the study was published in 2004 by the Swedish Laser Medical Society in Laser World as Guest Editorial.

Michael Zazzio has together with Bill Verran and Mark Quittner been planning a double blind, controlled, randomized study with a control group. If and when the study will be carried through has not been decided. Permission to start the study has not been received.

Y. SHIOMI - RESEARCH ABOUT TINNITUS TREATMENT

Another study, carried through at an otolaryngology department at a medical institute in Kyoto in Japan in 1997 by the researchers Yosaku Shiomi, Takahashi, Honjo, Kojima, Naito and Fujiki, displayed that tinnitus therapy with LASER had a positive effect on more than half of the patients in the study. The LASER light was administrated towards the cochlea via the hearing canal, and the conclusion was that LASER is worth trying on patients suffering from tinnitus symptoms. 55% of the patient population in the study had a diminished effect from the LASER treatment and no permanent or serious complications were observed. In the study, 26% of the LASER-treated patients had a permanent improvement in their tinnitus despite the low LASER doses administrated (21 Joule).

Y. SHIOMI - RESEARCH ABOUT COMPOUND ACTION POTENTIAL

A study measuring CAP (Compound Action Potential) was also carried through in Kyoto, Japan in 1995 by Yosaku Shiomi. The study was made on ears from a guinea pig and displayed that LASER exposure of the cochlear hair cells had an immediate effect on the impulse flow in the nerve cells. When the LASER light was turned off the impulse flow went back to normal levels. The changing in impulse flow proves that immediate processes take place in the inner ear when it is irradiated by LASER light.

C. SIEDENTOPF - CNS RESPONS IN LASER THERAPY ON THE INNER EAR
POSITIVE GOLD STANDARD LASER IRRADIATION STUDY ON THE INNER EAR

Christian Siedentopf and his colleagues at the Department of Radiology II, Division of Neuroradiology, University Hospital of Innsbruck in Austria investigated using a using functional MRI whether LASER therapy for inner ear therapy has any influence on the central nervous system. The laser stimulation device was placed on the tympanic membrane of both ears. A LASER stimulation run and a placebo run were performed in random order. The LASER run had a clinically measurable effect on the central nervous system. The placebo run didn't have that effect. The result in the study was significant. This could very well explain why many patients experience effects from LASER therapy already after the first treatment sesion.
 
M. TULLBERG & M. ERNBERG - TINNITUS THERAPY CONTROL GROUP

The aim of the study was to investigate the presence of symptoms and signs of temporomandibular disorders (TMD) in patients with tinnitus and to evaluate the effect of TMD treatment on tinnitus in a long term perspective in comparison with a control group of patients on a waiting list. 43% of the patients reported that their tinnitus was improved at the 2-year follow up, 39% that it was unchanged, and 17% that it was impaired compared to before the treatment. 12% of the subjects in the control group reported that their tinnitus was improved compared to 2 years previously, 32% that it was unchanged, and 56% that it was impaired.

RESULTS 2 YEARS AFTER
THE LASER TREATMENT
OF TINNITUS SYMPTOMS
 

Improved
Tinnitus


 

Unchanged
Tinnitus
Impaired
Tinnitus

  
Group receiving LASER therapy
44 %
39 %
17 %
Control group
12 %
32 %
56 %

The table above displays how common it is that tinnitus symptoms are worsened and how rarely tinnitus symptoms improve. The study was conducted at the Department of Clinical Oral Physiology, Institute of Odontology, Karolinska Institutet, Huddinge, Sweden.

A. IZZO - LASER STIMULATION OF THE AUDITORY NERVE

The hearing nerve was stimulated with LASER with a dose of only 0,015- 0,021 J/cm². The compound action potential (CAP) was affected by LASER light. The researchers demonstrated that the auditory nerve can be stimulated by optical radiation. One potential clinical use of this technology would be for cochlear implants. In a following study the research team has verified optical parameters such as pulse duration, repetition rate and wavelength to be important factors for tissue penetration depth and for the positive effects in cochlear nerve cells.

S. TAUBER - RESEARCH ABOUT TINNITUS TREATMENT

In a controlled, double blind study published in 2001 by Stefan Tauber, A. De Nigris, K Schorn, R Baumgartner, and W Beyer at the institution of otolaryngology at the Ludwig-Maximillian University in Münich, LASER therapy using 630 nm, 690 nm and 830 nm wavelengths had a positive effect on tinnitus symptoms. In the study every patient received LASER light during only three treatment sessions. Despite that, between 20 % and 40 % of the patient population had a diminished tinnitus in the groups receiving LASER from these wavelengths. Not one single patient of the 125 patients in the study was negatively affected by the treatment. The study also included a light dosimetric analysis measuring how much of the administrated LASER light is reaching the cochlea when the LASER light is administrated via the ear canal. Different LASER light frequencies were absorbed differently on their way to the sensory cells of the cochlea.

S. TAUBER - RESEARCH ABOUT TINNITUS TREATMENT

In 2003 Stefan Tauber, K Schorn, R Baumgartner, and W Beyer presented another positive study on the positive effects of LASER light on tinnitus symptoms. In this study the patients received LASER therapy on five occasions, and after six months a follow up procedure was made on the tinnitus symptoms of the patients. 13 out of 35 patients (37%) still had improvements in their tinnitus symptoms six months after the treatment. 2 patients got rid of their tinnitus symptoms. These results were measured despite the few treatment sessions and despite the fact that the evaluation was made six months after finished therapy.

T. KARU - RESEARCH ABOUT LASER THERAPY

A combination of 635 nm and 820-830 nm LASER light is, according to studies conducted by Prof. Tiina Karu, in a positive way affecting both RNA synthesis, DNA synthesis and the cell contact between cells. The cell repair work is stimulated by LASER light. If 820-830 nm LASER light is excluded in therapy, the effects in the RNA synthesis in the cells brings along that the transport function via the cell membranes is not as much stimulated as if they are used. If 635 nm LASER light is excluded, the positive effects in DNA synthesis affect the dividing rate of the cells. The cell contact between cells is stimulated by both wavelengths. Also, the ATP production is affected positively by LASER light. These effects have a major importance for cell respiration and for many processes in the cells and their ability to function normally. Apart from the work of Tiina Karu there are hundreds of LASER studies describing processes that support cell repair.

A. HAHN - RESEARCH ABOUT TINNITUS TREATMENT

A tinnitus study conducted by PhD. Med. Dr. Aleš Hahn, I Sejna, K Stolbova, A Cocek at the Karlovy University Hospital in Prague, the Czech Republic showed an improvement of tinnitus symptoms for 50,8% of the LASER treated chronic patients, suffering from tinnitus for more than 10 years. The study was published in Acta Otolaryngol 2001.

In another publication Aleš Hahn's study was divided into three groups. A comparison was made between LASER and Ginkgo Biloba. The study was based upon the Lurias scale. Each patient had a start value of their symptoms of the value 10. The evaluation was made after both three and six weeks after starting the treatment and the results are displayed in the table below.

RESULTS AFTER
THE TREATMENT OF
TINNITUS SYMPTOMS
 

GROUP 1
Ginkgo Biloba
 

GROUP 2
Ginkgo Biloba +
LASER
GROUP 3
LASER
  
Start value
10
10
10
Value after 3 weeks of treatment
8
4
6
Value after 6 weeks of treatment
7
5
5

The controlled study of Aleš Hahn where tinnitus symptoms were treated with LASER and Ginkgo Biloba. All groups in the study were improved. In the combined Ginkgo Biloba / LASER group the improvements were found to be the greatest. Every group consisted of 35 patients.

Michael Zazzio has together with Aleš Hahn been discussing and planning several research projects.

L. WILDEN - RESEARCH ABOUT HEARING TREATMENT

Lutz Wilden is the pioneer in LASER therapy on inner ear diseases who showed that large doses of LASER light were more beneficial than low doses administrated in earlier LASER studies. Lutz Wilden has shown that larger doses have a positive effect on a larger number of patients suffering from hearing impairment than smaller LASER light doses. Lutz Wilden has together with Dirk Ellerbrock conducted a study on patients with impaired hearing. The study was carried through with large doses of LASER light and displayed good results. The hearing capacity was improved for patients suffering from hearing impairment with an average of 7,8 dB after twelve treatment sessions on the approximately 400 ears that were treated in the study. The studies of Lutz Wilden also display that tinnitus symptoms are diminished or disappear for many patients who are treated with LASER light. Lutz Wilden has together with D. Dindinger conducted a positive clinical study on LASER treatment of tinnitus symptoms. Lutz Wilden has in research also been pointing out processes in the mitochondria, processes related to the increase of cell energy production when LASER light is administrated. In another study, Lutz Wilden has together with R. Karthein been studying LASER therapy on tinnitus symptoms. 67% of the patients got better in their tinnitus symptoms.

P. MARTI - RESEARCH ABOUT TINNITUS TREATMENT

In 2001 Peter Marti made a pilot study with the combined method including LASER therapy, electromagnetic therapy and negatively ionized oxygen ions. The study was conducted on 18 patients suffering from tinnitus symptoms. In the study 61% got rid of their tinnitus symptoms, another 33% had an obvious improvement in their tinnitus and 6% had a minor improvement. 94% of the patients had a major improvement or got rid of the symptoms. All patients in this pilot study had improvements. The study included 16 treatments per patient. Every treatment session lasted approximately 40 minutes. The LASERs emitted 830 nm and 635 nm wavelengths of LASER light and were administrated via the ear canal.

J. HUBACEK - RESEARCH ABOUT TINNITUS TREATMENT

Jiri Hubacek has been reporting his LASER medical experiences from otorhinolaryngology in "Experience with the use of LLLT in ENT Medicine". In the report there are two groups consisting of 60 tinnitus patients, 30 in each group. The patients were treated with LASER from 10 to 30 sessions. 35% of the treated patients got rid of their tinnitus, and 40% had their tinnitus symptoms reduced. There were no treatment effects on tinnitus for 25% of the treated patients.

R. JUBERG - RESEARCH ABOUT TINNITUS TREATMENT

Robin Juberg has been treating patients in Molde in Norway in cooperation with Ingunn Rogne at "Tinnituskontakt" in Møre og Romsdal and Harald Søbstad, the leader of "Kristiansund og Omegn Hørselsforening". The study shows that 87% of the treated patients had a noticeable change in their tinnitus and 60% of the patients had a great reduction (more than 40% reduction) of their tinnitus. 13% didn't receive any treatment effect.

U. WITT - RESEARCH ABOUT TINNITUS TREATMENT

There are many studies supporting positive effects after using LASER therapy on inner ear disorders and ear-nose-throat-dysfunctions, and there are many reports from doctors in private practice. Med. Dr. Uwe Witt has collected the following results for a report:

Researcher

Place

Positive effect among the patients
 
Prof. Zechner Wien, Austria
>50 %
Dr. Osterwald Hannover, Germany
56 %
Prof. Danielidis Saloniki, Greece
57 %
Dr. Witt Hamburg, Germany
58 %
Prof. Kramp Rostock, Germany
60 %

Source: Med. Dr. Uwe Witt, Hamburg

G. WENZEL - HEARING IMPROVEMENT WITH LASER THERAPY

In Texas, U.S.A., a group of researchers have shown that collagen structures in the cochlea and the basilar membrane correct their birefringence instantly after LASER light exposure. The researchers believe that this is a very possible reason for hearing improvement in the higher frequencies. In another study it is concluded that LASER light doses of 180 J/cm² has a better treatment effect than LASER light doses of 15 J/cm².

F. ANDERSEN & C. DETERVILLE, IHA-GfK AG - LASER THERAPY ON TINNITUS

In an investigation on 79 LASER treated patients in Switzerland, treated for their tinnitus, 94 % answered that they had become better from LASER therapy. The investigation was conducted year 2005.

A. FLOCK - LASER THERAPY DOES NOT DAMAGE THE INNER EAR HAIR CELLS

At the Karolinska institutet in Solna / Stockholm in Sweden professor Åke Flock, Brita Flock and Eric Scarfone displayed that extremely high doses of LASER-light didn't damage the inner ear cells despite the fact that the shell (the cochlear bone) of the inner ear, constituting a somewhat protective barrier, had been removed and the inner ear hair cells therefore were directly exposed to the intense LASER-light.