Study of Low Level Laser Therapy and Tinnitus Relief

NCT ID: NCT00845975

Last Updated: 2014-06-05

Basic Information

• Recruitment Status: TERMINATED
• Clinical Phase: NA
• Total Enrollment: 18 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2008-08-31
• Study Completion Date: 2008-11-30

Brief Summary

The purpose of this study is to determine if low level laser light therapy might help to relieve tinnitus in adults.

Detailed Description

Tinnitus is the perception of sound, such as a ringing or hissing, that occurs in the ears or head in the absence of external stimuli. About 40-50 million people in the United States report experiencing tinnitus; 10-12 million have sought medical help for their tinnitus, with 2.5 million reporting their tinnitus as debilitating. As a result of the distressing nature of tinnitus, it is often accompanied by anxiety, depression and sleep difficulties.

Tinnitus is most often caused by sensorineural hearing loss due to presbyacusis (aging) or noise damage. It is believed that the tinnitus results when spurious neuro-electrical signals are produced by diseased, degenerated or damaged cochlear hair cells and interpreted by the brain as tinnitus.

There is presently no cure for tinnitus. Current management strategies include using other external sounds to distract from the tinnitus, teaching relaxation and stress reduction techniques, and prescription medications to help ease stress, anxiety, depression and sleep difficulties. However, in general, current tinnitus management techniques are only minimally effective. It is believed that low level laser light therapy may offer a simple, non-invasive means of relieving the symptoms of tinnitus. In theory, low level laser light penetrates targeted tissues to stimulate the mitochondria in underlying cells to produce energy through the production of adenosine triphosphate (ATP). In turn, the enhanced ATP fuels cellular energy and enhances blood flow to the cochlear hair cells (cilia) to assists in regulating the electrical signals disrupted by the diseased and/or degenerated cochlear hair cells. With the taming of the spurious electrical signals, the brain no longer has a basis to perceive the noise known as tinnitus.

Conditions

Tinnitus

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: TRIPLE

Study Groups

Erchonia Hearing Lasers #1 & #2

Erchonia Hearing Laser #1 is a dual laser system composed of a pulsed red 7.5 milliwatts (mW) laser of 635 nm +/- 5 nm and a pulsed green 7.5 mW laser of 532 nm, both lasers in simultaneous operation when the laser is activated.

Erchonia Hearing Laser #2 is a single diode laser that in pulsed mode emits 4.9 mW of red 635 nm +/- 5 nm light.

Group Type: ACTIVE_COMPARATOR

Erchonia Hearing Lasers #1 & #2

Intervention Type: DEVICE

Two treatments with Erchonia Hearing Laser #1 administered by the investigator at the test site, each treatment seven days apart.

Seven treatments with the Erchonia Hearing Laser #2 administered by the subject at home, one time each day for seven consecutive days, the first administration on the same day as the first administration with the Erchonia Hearing Laser #1 at the test site.

Placebo Lasers

Inactive lasers that do not emit any therapeutic light.

Group Type: PLACEBO_COMPARATOR

Placebo Lasers

Intervention Type: DEVICE

The same test site and at-home treatment administration protocols are followed, but the laser devices do not emit any therapeutic light.

Interventions

Erchonia Hearing Lasers #1 & #2

Two treatments with Erchonia Hearing Laser #1 administered by the investigator at the test site, each treatment seven days apart.

Seven treatments with the Erchonia Hearing Laser #2 administered by the subject at home, one time each day for seven consecutive days, the first administration on the same day as the first administration with the Erchonia Hearing Laser #1 at the test site.

Intervention Type: DEVICE

Placebo Lasers

The same test site and at-home treatment administration protocols are followed, but the laser devices do not emit any therapeutic light.

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

• Total score on the Tinnitus Handicap Inventory (THI) of at least 20.
• Tinnitus is on-going; present for more than 50% of the time over the past 6 months.
• Subject has been previously evaluated by a qualified health care professional for tinnitus and received a diagnosis of etiology of tinnitus related to hearing impairment and/or noise exposure and/or unknown.
• Any existing hearing loss stable over the past 12 months.
• Willingness to abstain from partaking in other, non-study procedures indicated to lessen tinnitus and/or its perception, with the exclusion of wearing hearing aids for those subjects who enter the study using hearing aids, throughout the course of study participation.
• Willing and able to refrain from engaging in activities or work involving loud noise exposure, such as hunting, rock concerts and work situations that involve working around loud machinery, construction sites, etc., throughout the course of study participation.
• 18 years or older.
• Male or female.
• English as primary spoken language.

Exclusion Criteria

• Presence of any of the following or in the subject's medical history:
• physical trauma or surgery to the head or neck
• uncontrolled hypertension
• current or prior surgically removed acoustic neuroma middle ear infection/active drainage from the ear and/or history of either within the previous 90 days
• impacted cerumen
• thyroid disease
• vascular disorders
• Temporomandibular Joint Disorder (TMJD)
• nutritional deficiency
• aneurysm
• multiple sclerosis
• Episodic or infrequent tinnitus
• Somatic or pulsatile tinnitus
• Prior history of sudden hearing loss and/or fluctuating hearing levels .
• Consistent use of any of the following drugs within the past 30 days:

NSAIDS; aspirin and other salicylates; Lasix and ther "loop"diuretics; "mycin" antibiotics such as vancomycin; quinine and related drugs; Chemotherapy agents such as cis-platin.

• Acute or chronic vertigo/dizziness.
• Prior diagnosis of central auditory processing disorder.
• Ménière's disease.
• Tympanic membrane perforation or tubes.
• Prior stapedectomy
• Prior mastoidectomy.
• Otosclerosis.
• Otosyphilis.
• Labyrinthitis.
• Auditory nerve damage.
• Stapedius myoclonus syndrome.
• Brain and/or brainstem injury.
• Cochlear implant.
• Photosensitivity disorder.
• Active/open infection, wound or other external trauma to the areas to be treated with the Hearing Laser.
• Pregnant or lactating.
• Serious mental health illness such as dementia or schizophrenia; psychiatric hospitalization in past two years.
• Developmental disability or cognitive impairment that would make it difficult for the subject to partake in the clinical study, including adequate comprehension of the informed consent form and ability to record the necessary measurements.
• History of drug or alcohol abuse.
• Involvement in litigation and/or a worker's compensation claim and/or receiving disability benefits related to tinnitus and/or hearing loss.
• Participation in research in the past 30 days.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Erchonia Corporation

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Louis A Looper, MA, CCC-A

Role: PRINCIPAL_INVESTIGATOR

McDonald Hearing Aid Centers

Locations

McDonald Hearing Aid Center

Sacramento, California, United States

Countries

United States

Other Identifiers

TS-001

Identifier Type: -

Identifier Source: org_study_id