laryngoscope

…including the sinus openings, the larynx, and the vocal cords. The type of endoscope used for this procedure is called a nasopharyngolaryngoscope. This instrument enables a more thorough examination to be performed than is possible with indirect visualization with a mirror.

…seen from above with the laryngoscope, an instrument designed for visual inspection of the interior of the larynx.

Such devices, when they flash on and off at just the right rate, make the vocal cord movements appear much slower than they actually are, so that the observer perceives a slow-motion pattern. High-speed cinematography (moviemaking) has elucidated many details of vocal cord function for the…

This instrument, the laryngoscope, was adopted by Ludwig Türck and Jan Czermak, who undertook detailed studies of the pathology of the larynx; Czermak also turned the laryngoscope’s mirror upward to investigate the physiology of the nasopharyngeal cavity, thereby establishing an essential link between laryngology and rhinology. One of…