Presbycusis

n. hearing loss, hearing impairment (due to old age)

Presbycusis, or age-related hearing loss, is the cumulative effect of aging on hearing. Also known as presbyacusis, it is defined as a progressive bilateral symmetrical age-related sensorineural hearing loss. The hearing loss is confined to higher frequencies.
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Presbycusis /pres·by·cu·sis/ progressive, bilaterally symmetrical sensorineural hearing loss occurring with age. pres·by·cu·sis n. See presbyacusis. [more]Presbycusis - Community and Resources

The loss of hearing due to old age