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Related Concept Videos

Hearing01:31

Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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Hearing loss in the developing world: evaluating the iPhone mobile device as a screening tool.

S Peer, J J Fagan

    South African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde
    |June 6, 2015
    PubMed
    Summary

    The uHear app on an iPhone effectively screens for moderate to severe hearing loss in developing countries. This mobile health tool shows high sensitivity for detecting high-frequency hearing loss, aiding early detection in resource-poor settings.

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    Area of Science:

    • Otolaryngology
    • Mobile Health Technology
    • Global Health

    Background:

    • Developing countries face a high prevalence of hearing loss with limited screening programs.
    • Smartphones offer a potential platform for accessible audiometric testing.

    Purpose of the Study:

    • To evaluate the accuracy of the uHear app on an iPhone as a hearing screening tool in developing regions.
    • To assess its utility for early hearing loss detection in underserved, high-risk populations.

    Main Methods:

    • A quasi-experimental study involving 25 patients at a South African hospital.
    • Participants completed the uHear test in various settings (waiting room, quiet room, soundproof room).
    • Results were compared against formal audiograms for accuracy.

    Main Results:

    • The uHear app demonstrated 100% sensitivity in detecting moderate or worse hearing loss (PTA > 40 dB) across all environments.
    • High specificity was observed in soundproof (88%) and quiet rooms (73%).
    • The app showed high accuracy for high-frequency hearing loss and moderate accuracy for low-frequency loss in controlled settings.

    Conclusions:

    • The uHear app on an iPhone is a feasible tool for screening significant hearing loss (PTA > 40 dB).
    • Its high sensitivity for high-frequency loss is valuable for detecting conditions like presbycusis and ototoxic effects.
    • The app's portability and ease of use make it suitable for hearing loss screening in developing communities lacking formal programs.