Deafblindness is the condition of little or no useful hearing and little or no useful sight. There are different degrees of vision loss and auditory loss within each individual, thus making the deafblind community unique with many types of deafblindness involved. Because of this inherent diversity, each deafblind individual's needs regarding lifestyle, communication, education, and work need to be addressed based on their degree of dual-modality deprivation in order to improve their ability to live independently. In 1994, it was estimated that roughly 35,000–40,000 United States residents are medically deafblind. Helen Keller was a well-known example of a deafblind individual. To further her lifelong mission to help the deafblind community to expand its horizons and gain opportunities, the Helen Keller National Center for Deaf-Blind Youths and Adults (also called the Helen Keller National Center or HKNC), with a residential training program in Sands Point, New York, was established in 1967 by an act of Congress.
Furthermore, the deafblind community has its own culture, creating a community of deafblindness similar to the deaf community and the blind community. Each community is made up of a group of individuals who have undergone similar experiences and have a homogeneous understanding of what it means to be deafblind, even with a large diversity of unique backgrounds. Some deafblind individuals view their condition as a part of their identity.
The medical condition of deafblindness comes in different forms. For some, this condition might occur congenitally from birth as a result of genetic defect, for others it happens suddenly due to a form of illness or accident that results in a modality deprivation of either vision or hearing, or both. A person might be born deaf and become blind at a later stage in life, or vice versa. In any given case of deafblindness, there are many possible onsets and causes of this condition; some happen gradually, others happen unexpectedly and suddenly. The diagnosis of deafblindness could be medically classified into specific types based on one’s symptoms and causes.
Congenital deafblindness: the condition of deafblindness from birth
- Pregnancy complexities:50–67
- Genetic conditions (evident from birth):37–49
Acquired deafblindnness: condition of deafblindness developmental later in life
- Genetic conditions (evident at a later stage in life):37–49
- Age-related loss of modality (vision or auditory or both)
- Somatic injuries:68–74
Deafblind people communicate in many different ways as determined by the nature of their condition, the age of onset, and what resources are available to them. For example, someone who grew up deaf and experienced vision loss later in life is likely to use a sign language (in a visually modified or tactile form). Others who grew up blind and later became deaf are more likely to use a tactile mode of spoken/written language. Methods of communication include:
- Use of residual hearing (speaking clearly, hearing aids, or cochlear implants) or sight (signing within a restricted visual field, writing with large print).
- Tactile signing, sign language, or a manual alphabet such as the American Manual Alphabet or Deaf-blind Alphabet (also known as "two-hand manual") with tactile or visual modifications.
- Interpreting services (such as sign language interpreters or communication aides).
- Communication devices such as Tellatouch or its computerized versions known as the TeleBraille and Screen Braille Communicator.
- Tadoma, a tactile modality.
Multisensory methods have been used to help deafblind people enhance their communication skills. These can be taught to very young children with developmental delays (to help with pre-intentional communication), young people with learning difficulties, and older people, including those with dementia. One such process is Tacpac.
Deafblind people often use the assistance of people known as Support Service Providers (SSPs). The SSPs help the deafblind with things such as routine errands, guide the deafblind through unfamiliar environments, and facilitate communication between the deafblind person and another person.
Braille equipment includes a variety of multipurpose devices, which enhance access to distance communication. Some can be used as stand-alone devices connected via Wi-Fi, while others are paired with a mobile device to provide tactile access to e-mail, text messaging, and other modern communication resources. To receive braille equipment, an eligible consumer must be proficient in braille and must have access to the Internet or cellular service.
The Telebraille does not have a computer communications modem but does have a TTY (TDD) modem. It was designed as a TTY for deaf-blind people and is also useful for face-to-face conversation. It has two components. The sighted component is a modified SuperCom TTY device. It has a qwerty keyboard and a single-line LED display. The display is regular size and is not particularly suited to people with low vision. The SuperCom TTY can be connected directly to the telephone line using a conventional telephone jack or the telephone receiver can be coupled to the SuperCom on a cradle on top of the device. Text flows past the display in a continuous stream, like tickertape. The SuperCom is connected to the braille portion of the device by a cable that is about two feet long. The braille display is about 15 characters in width, although there is a knockout to allow additional characters to be installed, at considerable additional cost. The Telebraille is able to communicate in ASCII mode but is not compatible with conventional computer modems. There is what looks like a RS-232 socket on the back of the braille component, but the instructions for the Telebraille state that this jack is for "future use" and that no computer devices should be attached to it.
A graphic braille display can be used in sensing graphic data such as maps, images, and text data that require multiline display capabilities such spreadsheets and equations. Graphic braille displays available in the market are DV-2 (from KGS), Hyperbraille, and TACTISPLAY Table/Walk (from Tactisplay Corp.). For example, TACTISPLAY Table can show 120*100 resolution refreshable braille graphics on one page.
In popular culture
The film Marie's Story (2014) relates the childhood and education of Marie Heurtin (1885-1921), a deafblind woman.
Haben Girma, the first deafblind individual to graduate from Harvard Law School, released an autobiography entitled Haben: The Deafblind Woman Who Conquered Harvard Law in 2019.
Feeling Through is a 2019 American short drama film directed by Doug Roland that is the first film ever to star a deafblind actor (Robert Tarango) in a lead role; it is about a teenager and a deafblind man. It was nominated for the 2021 Academy Award for Best Live Action Short Film.
- Tangible symbol systems
- Tommy (rock opera)
- White cane (used by blind people to assist them in walking)
- Keller, Helen (1938). Helen Keller's Journal, 1936-1937. Garden City, NY: Doubleday, Doran & Co.
- Kudlick, Catherine; Nielsen (2005). "Kim". Journal of American History. 4. 91 (Review of the Radical Lives of Helen Keller): 1533. doi:10.2307/3660309. JSTOR 3660309.
- Dammeyer, Jesper (November 2014). "Deafblindness: a review of the literature". Scandinavian Journal of Public Health. 42 (7): 554–562. doi:10.1177/1403494814544399. ISSN 1651-1905. PMID 25114064. S2CID 23967371.
- Deaf-Blindness, NCDB: National Center on. "Overview on Deaf-Blindness". nationaldb.org. Retrieved 2018-03-27.
- "NCDB Selected Topics: Deaf-Blindness Overview". Nationaldb.org. Retrieved 2012-03-04.
- Deaf-Blindness, NCDB: National Center on. "Culture and Community". nationaldb.org. Retrieved 2018-03-27.
- "Identity – DeafBlind Connection – Minnesota State Academies". www.msa.state.mn.us. Retrieved 2018-03-27.
- "Conditions/Syndromes | Deafblind Information". Deafblindness Support Services. Retrieved 2018-03-27.
- "Causes". nhs.uk. Retrieved 2018-03-27.
- Heller, Kathryn; Kennedy, Cheryl. Etiologies and Characteristics of Deaf-Blindness (PDF). National Center on Deaf-Blindness.
- "HKNC: Common Causes of Combined Vision and Hearing Loss". www.helenkeller.org. Retrieved 2018-03-27.
- "What is a SSP?". Helen Keller National Center. Retrieved 4 May 2021.
- "Home of KGS Corporation". KGS Corporation.
- "Hyperbraille". Hyperbraille.
- "Home of Tactisplay Corp". Tactisplay Corp.
- "Full Page Braille Display being Launched by Tactisplay Corp". Tactisplay Corp.
- "This video shows operation of the device". Retrieved Sep 10, 2020.
- "The Miracle Worker (2000)". imdb.com. Retrieved 2017-12-23.
- Bobrow, Emily (2 August 2019). "Haben Girma Is a Trailblazer for the Deaf and Blind". The Wall Street Journal. Retrieved 7 November 2020.
- Angela Zapke (November 29, 2019). "New Film Features First DeafBlind Actor in a Lead Role". Retrieved March 15, 2021.
- "Feeling Through 2019 Full Cast and Crew". Retrieved March 15, 2021.
- Media related to Deafblindness at Wikimedia Commons
- The National Center On Deaf-Blindness Official informational website on deafblindness in United States.
- The Helen Keller National Center for Deaf-Blind Youths and Adults Helen Keller Services website catering for the deaf-blind and blind communities.
- World Federation of the Deafblind Website for worldwide information concerning deafblindness.
- Able Australia Informational website on deafblindness in Australia.
- "Haben Girma Homepage" About Haben Girma, the first deafblind Harvard Law School graduate.
- Deafblind UK is a national charity in the UK supporting people with sight and hearing loss to live the lives they want.