This is a preliminary report on the examination of the larynx and surrounding areas with the aid of a new instrument and new approach.
The present methods for viewing the interior of the larynx are through the mouth, by indirect or direct laryngoscopy.
These methods have their limitations, i. e.:
(a) Marked sensitivity of the throat, causing gagging.
(b) Anatomic difficulties.
(c) The inconvenience of inserting a straight tube over the dorsum of the tongue and lifting the epiglottis, to view the larynx.
(d) Examination requires the aid of a specialist.
My new approach is through the nasal passage, entering the nasopharynx. It uses a scope of suitable caliber and magnification. The total magnification required depends upon the choice of a suitable, objective-tube lens-eye-piece combination. The sighting prism, viewer, or objective is located at the tip of the scope so that when the scope is in position the soft palate