Presbycusis is a
gradual loss of hearing that occurs in most individuals as they grow
older. It's pretty much common knowledge that hearing loss is associated
with aging. About 30-35 percent of adults between the ages of 65
and 75 years have a hearing loss and about 40-50 percent of people 75
and older have a hearing loss.
The loss associated with presbycusis is usually
greater for high-pitched sounds. A person suffering from this type of
hearing loss may be able to hear deeper, bassier sounds, but may not be
able to hear things such as a high-pitched telephone ring.
Presbycusis almost always occurs in both ears,
affecting them equally. Because the loss of hearing is gradual, people
who have presbycusis may not realize that their hearing is diminishing.