Hearing aid helps individuals with hearing loss to listen, communicate and participate more fully in daily activities. Latest estimates reveal that hearing loss affects 1.6 billion people worldwide, of whom 430 million have moderate or higher severity hearing loss [8]. By 2050, the number of people with hearing loss is projected to reach nearly 2.5 billion, of whom 700 million will have moderate or higher severity of hearing loss [8]. Prevalence of hearing loss varies across regions, with 80 per cent living in LMICs [8]. The need is significantly under-tapped despite this growth, with fewer than 20 per cent of people who need hearing solutions currently have access to one [9].
Access to hearing aids is just one component of rehabilitation for people with hearing loss. Counselling, speech and language therapy, hearing aid fittings, follow-ups, provision of repair and spare parts such as batteries are critical for the success of hearing aid rehabilitation programmes. It is important to note that this section focuses solely on the number of hearing aids being provided in LMICs as a measure of demand. 1