/Objective : One of the missions of the United States FDA is "protecting the public health by ensuring the safety, efficacy, and security of human and veterinary drugs, biological products." The current guidelines for OTC hearing aids impose an output limit of 111 dB SPL for linear hearing aids and 117 dB SPL for compression hearing aids when measured using 90 dB SPL pure tones in a 2 cc coupler....
✦ The floor
Discussion
Signed responses from readers of the wire.
Audiologists fitting or advising patients on OTC devices should be aware that current FDA output limits may be unsafe for small ear canals (e.g., children or adults with smaller canals); advocating for RECD-based verification remains best practice.
FDA OTC hearing aid regulations affect millions of self-fitting consumers, and if output limits are genuinely dangerous, this has major public health and liability implications for both regulators and the profession.
- 01Current FDA OTC hearing aid guidelines permit fitting across an extremely wide range of hearing loss, potentially including severe losses.
- 02Output levels allowed under current rules may reach dangerous sound pressure levels in smaller ear canals.
- 03Authors advocate for mandating real-ear-to-coupler difference (RECD) measurements to set safe, individualised output limits.
- 04Risk is particularly elevated for paediatric ear canals, which are smaller and amplify sound more.
- 05The critique targets regulatory policy rather than a specific OTC device.
Current FDA OTC hearing aid guidelines permit an excessively high fitting range, including severity levels that should require professional oversight.
studypartially supportedOTC hearing aid output levels permitted by FDA guidelines can reach dangerous sound levels in some ear canals.
studypartially supportedUsing RECD measurements would prevent potentially unsafe output levels from OTC hearing aids.
opinionpartially supported- PMID
- 42776766
- DOI
- 10.3390/audiolres16050124.
- Journal
- Audiology Research
- Publication type
- research_article
- Evidence level
- 5
- Population
- Analysis of FDA OTC hearing aid regulatory guidelines; implications modelled for varied ear canal sizes
- Intervention
- Evaluation of FDA OTC hearing aid fitting range and output limits; proposal to incorporate RECD
- Comparator
- Current FDA guideline standards without RECD
Primary outcomes
Maximum permissible fitting range under current FDA OTC rules; Modelled output sound pressure levels in varied ear canal sizes; Safety implications of not using RECD in OTC fitting