Sensory impairments refer to disorders that affect auditory or visual abilities. These may include various degrees of hearing impairment, visual impairment or deafblindness.
As regards hearing or visual impairments, distinctions are made between the various degrees of sensory loss. For the hearing impaired, there are varying forms of hearing loss, ranging from "hard of hearing" to total deafness. Tinnitus is also considered a hearing impairment. As regards the visually impaired, there are also varying forms of defective vision, in some cases reaching to total blindness. Deafblindness is referred to in cases where both the hearing and the seeing faculties are impaired.