Jiya Bavishi's auditory brainstem implant is helping her hear some sounds for the first time. Lauren Silverman/KERA hide caption

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Sam Swiller and his dog, Sully, in their home in Washington, D.C. Meredith Rizzo/NPR hide caption

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Pages from El Deafo by Cece Bell. Click here to enlarge. Abrams hide caption

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Kathleen Raven, a health reporter, found out she had hearing loss when she was 5 years old. Jessica Horwitz hide caption

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Patients sit with their eyes bandaged at an Aravind Eye Care clinic in Madurai, India after cataract surgeries. Aravind performs more than 300,000 cataract surgeries annually. Reinhard Krause/Reuters/Landov hide caption

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Sound World Solution's hearing device lets a user customize its settings using a Bluetooth connection and a smartphone. Courtesy of Sound World Solutions hide caption

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Basic hearing aids cost an average of $1,500 per ear. IStockphoto.com hide caption

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Composer Richard Einhorn lost most of his hearing several years ago, but that hasn't held him back, thanks to state-of-the-art digital hearing aids. Kevin Rivoli/AP hide caption

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