what is the purpose of a hearing test?
<answer> To evaluate hearing function and if it is impaired to attempt to localize the site of lesion. <context> Figure 1. The Ear. Hearing can be impaired due to lesions in the external ear canal, the middle ear, or the inner ear. The purpose of hearing testing is to evaluate hearing function and, if it is impaired, to attempt to localize the site of lesion.