Specialists who evaluate hearing problems and advise patients about the possible use of hearing aids or other kinds of treatments: "Audiologists are trained to evaluate hearing losses and related disorders of those who are having problems with their hearing, including balance (vestibular) disorders and tinnitus (ringing in the ears) and to rehabilitate individuals for their hearing losses and related disorders."

"Audiologists use a variety of tests and procedures to diagnose hearing and balance functions and to fit and dispense hearing aids and other assistive devices for hearing."