In many African nations the general awareness of hearing impairment is low and lack of resources has caused a lack of scree...
Hearing loss statistics
May 1, 2013
ARTICLE 1 – PURPOSE
The purpose of the present Convention is to promote, protect and ensure the full and equal enjoyment of all human rights and f...
DO YOU KNOW WHAT THE UNITED NATIONS CONVENTION ON THE RIGHTS OF PERSONS WITH DISABILITIES ARTICLES 1, 2, 9 & 21 ARE?
July 18, 2014
Hearing loss prevention
May 13, 2014
Noise induced hearing loss
Aging, some drugs, head injuries and too much noise can all cause lasting damage to hearing. This handout discusses the most common type of permanent hearing loss -- the loss that results from too much noise.
Frequent exposure to loud or moderately loud noise over a long period of time can damage the soft tissue of the inner ear. Cells and nerves in the inner ear are destroyed by continuous or repeated exposure to loud sounds. If enough cells and nerves are destroyed, hearing is permanently damaged.
Whether noise harms your hearing depends on the loudness, the pitch and the length of time you are exposed to the noise. The loudness of a sound (measured in decibels, or dB) and the length of exposure are related. The louder the sound, the shorter the exposure can be before damage occurs. For example, 8 hours of exposure to 85-dB noise on a daily basis can begin to damage a person's ears over time. Using power tools (at about 100 dB), listening to loud stereo headsets (at about 110 dB), attending a rock concert (at about l20 dB) or hearing a gunshot (at 140 to 170 dB) may damage the hearing of some people after only a few times.