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Bookmark or Share- Deafness and hearing loss - World Health Organization (WHO)Deafness and hearing loss. A person is said to have hearing loss if they are not able to hear as well as someone with normal hearing, meaning hearing thresholds of 20 dB or better in both ears. It can be mild, moderate, moderately severe, severe or profound, and can affect one or both ears.
- Deafness and hearing loss - World Health Organization (WHO)Hearing loss may be mild, moderate, severe or profound. It can affect one ear or both ears and leads to difficulty in hearing conversational speech or loud sounds. Hard of hearing refers to people with hearing loss ranging from mild to severe.
- What Are Cochlear Implants for Hearing? | NIDCDA cochlear implant is a small, complex electronic device that can help to provide a sense of sound to a person who is profoundly deaf or severely hard-of-hearing.
- Hearing loss - Symptoms and causes - Mayo ClinicOverview. Hearing loss that comes on little by little as you age, also known as presbycusis, is common. More than half the people in the United States older than age 75 have some age-related hearing loss. There are three types of hearing loss: Conductive, which involves the outer or middle ear.
- Profound Deafness in Childhood | New England Journal of MedicineCauses and Pathophysiology of Profound Childhood Deafness. The prevalence of permanent childhood hearing loss, which is mainly due to loss of cochlear function, is 1.2 to 1.7 cases per 1000 live...
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