It is an imaging test performed with a rigid endoscope to examine the larynx and vocal cords. The procedure is outpatient and risk-free. 

To perform it, the patient must remain seated. Topical anesthesia is applied to the mouth and throat to reduce the gag reflex that some people experience. After a few minutes, the tongue is pulled forward and the endoscope is inserted until the vocal cords are visible. You will be asked to say a few letters in a sustained manner and to breathe deeply while the images of the vocal cords are observed on a monitor.