DeafBlind

Deafblindness is the condition of little or no useful hearing and little or no useful sight.[1][2] 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.[3] Because of this 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.[4] Helen Keller was a well-known example of a deafblind individual.[5]

Source - Deafblindness - Wikipedia