and visual impairment. Herein, we focus on the difficulties experienced by those who have acquired hearing and vision loss associated with age-related changes and pathologic conditions. Most individuals with age-related DSI experience gradual onset of mild to moderate sensorineural hearing loss and vision loss. Awareness of late-onset DSI among older individuals is increasing, presumably because the size of this population is growing rapidly. However, there is almost no research on rehabilitation for this population; therefore, there is a tremendous imperative to develop and test rehabilitation strategies.Although there are clear definitions of degrees of vision impairment and hearing impairment, definitions of DSI are lacking, and determination of a standardized definition is complex. Proposed definitions are functional in nature and tend to be nonspecific, with few implications for clinical practice. For instance, Davenport 5 suggests that DSI is "any combination of hearing and vision loss that interferes with access to communication and the environment and requires interventions beyond those necessary for hearing or vision loss alone." This generality is in part due to the fact that there is an unknown, and presumably variable, interaction between the two impairments. As D ual sensory impairment (DSI) refers to the presence of both hearing loss and vision loss. According to the Centers for Disease Control and Prevention, 1 at least 1.7 million people report DSI. Studies show that between 9% and 21% of adults older than 70 years have some degree of DSI [2][3][4] and that the prevalence increases with age. As pointed out by Desai et al, 1 as the population ages, so will the number of individuals with DSI.Individuals with DSI can be classified into the following 4 groups: congenital deafblindness, congenital visual impairment with acquired hearing impairment, congenital hearing impairment with acquired visual impairment, and acquired hearing Dual sensory impairment (DSI) refers to the presence of both hearing loss and vision loss. The occurrence of DSI is particularly prevalent among the aging population, with studies showing between 9% and 21% of adults older than 70 years having some degree of DSI. Despite this, there is little direction regarding recommended clinical practice and rehabilitation of individuals with DSI. It is assumed that the problems encountered by individuals with DSI are considerably greater than the effects of vision impairment or hearing impairment alone, because when these two sensory impairments are combined, the individual is seriously deprived of compensatory strategies that make use of the nonimpaired sense. In this article, the literature available regarding DSI is summarized, and research needs regarding rehabilitation strategies are outlined and discussed. Simple suggestions for addressing DSI are provided that use available tools and technology.