How Do Light-Based Hearing Aids Work?
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  • Post published:December 22, 2020
  • Post category:Hearing Aids
  • Post last modified:December 23, 2020

As hearing loss affects just short of 50 million people in the US, companies have attempted to innovate hearing aids to meet the demand. One such form of aid is a light-based hearing device. These devices offer significantly different functionality compared to typical hearing aids that amplify sound either digitally or with an analog circuit.

Although many people have heard of various types of surgical implant hearing aids that assist hearing-impaired individuals, most will not have heard of light-based heading aids. Due to this, we intend to answer the following questions surrounding these unique hearing devices.

  1. What is a light-based heading aid?
  2. How do light-based hearing aids work?
  3. Who should use light-based hearing devices?

Light-Based Hearing Aids

Earlens Corporation first created this type of hearing aid to overcome the limitations of conventional hearing aids. Amplifying acoustic sound or digitally processing sound has limitations to what frequencies can be processed and heard. Scientists created light-based hearing aids to surpass the modern-day possibilities of bandwidth amplification.

At the most basic level, light-based hearing aids transmit sound using light waves. The idea behind these devices is that using light as a mechanism allows for a more natural, undisturbed sound. Ideally, users of light-based hearing aids experience the most natural listening possible.

Earlens Contact Hearing Device

Earlens Contact Hearing Device

Earlens is the only light-based hearing device on the market as of today. The device works by utilizing a small lens inside the ear which is placed directly on the eardrum. This piece vibrates and oscillates to restore and induce a natural hearing experience. Each lens is placed by an audiologist and is custom-fitted to be perfect for each user’s ear.

However, the process does not require surgery, anesthesia, or something else similar. The goal of this piece, and the whole system, is to act as an extension to one’s ear.

In a healthy ear, without any damage or impairment, sound waves enter the ear which vibrates the eardrum. This vibration of the eardrum sends signals to one’s brain which correlates to whatever was heard. Earlens light-based hearing aid does just this, but it uses light as a helping hand.

The whole system utilizes a receiver worn behind or on top of one’s ear that captures sound. This is then converted into energy, in the form of light waves, that are transferred through a tube to a custom ear tip sitting inside one’s ear canal. The ear tip sends these light waves to the lens on the eardrum causing it to vibrate and stimulate the natural hearing response.

Various reviews and tests conducted show that Earlens light-based hearing aids significantly improve the bandwidth compared to other standard reliever-in-the-canal hearing aids. One study found the mean bandwidth for conventional hearing aids to be 890 to 4,400 Hz. 

Earlens’ offers a hearing device with a spectral range of amplification of 125-10,000 Hz—a significantly wider range. Furthermore, Earlens’ device had a maximum gain of 55dB, compared to standard devices having a gain of 22-39dB.

Who Benefits from a Light-Based Hearing Aid?

Earlens light-based hearing device is suited for virtually all patients with hearing loss. The device’s design targets sensorineural hearing loss, which is the most common form of hearing loss. Sensorineural hearing loss occurs when the inner ear is damaged which leads to inefficient processing of sounds. The light-based hearing aid overcomes the injury by directly stimulating the eardrum.

Light-based hearing aids are suitable for individuals with mild to severe hearing loss. As long as potential users have a middle ear and eardrum that is intact and void of deformity, they qualify as users. Beyond physical limitations, individuals who benefit from light-based hearing aids are those who want a quality, natural listening experience. As seen above, Earlen’s light-based hearing aids provide a significantly improved breadth of frequencies.

User’s of light-based hearing aids benefit from increased confidence, improved communication skills, improved mental health, greater desire to participate in social events, and feelings of security and independence.

Often, hearing loss contributes to issues with memory, cognitive skills, mood fluctuations, and the ability to focus in various environments. Light-based hearing aids can help individuals overcome all those problems as well.

Further benefits of light-based hearing aids include the FDA stamp of approval, automatic environment adjusting from the hearing aids, proven customer satisfaction, and wireless charging. Although these hearing aids function much differently than conventional hearing aids, it seems as though they offer many more benefits.

Josh Roberts

Josh spent many years of his life working in an industrial environment where hearing protection is paramount to workplace safety. Since then he has been on a mission to share how important taking care of your hearing is for living a great life.

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