According to a study realized by GAES, one of each five Spaniards it recognizes that it does not hear well, but is the population of more than 50 years, a 58 percent, that says more to have noticed that its level of hearing has gotten worse with the age. For example, the majority of these people recognizes that they need to raise the volume of his television or who often they ask that words repeat to them during a conversation. Making case to these first symptoms, the experts remember that a revision of the ear must be realized at least once a year to detect any auditory problem quickly and to adopt in time the most suitable solution to palliate the loss, before he is non-recoverable. It is enough with making an audiometry, a very simple and painless test, that can be realized in centers specialized without no type of cost. The auditory loss is already in Spain the third affection in importance after the arthrosis and the hypertension. Esteem that near three million people, an 8 percent of the population, has some problem of hearing.