Direct laryngoscopy allows you to examine the internal structure of the larynx in a direct image and to produce in a large enough amount of various manipulations on its structures (removal of polyps, fibroma, papillomas, cryosurgical or laser surgical methods), and to carry out emergency or planned intubation. The method is based on the use of a rigid directory, the introduction of which into the laryngopharynx through the oral cavity becomes possible due to the elasticity and compliance of surrounding tissues.
Laryngoscopy is the main kind of laryngeal research. The complexity of the method lies in the fact that the longitudinal axis of the larynx is located at a right angle to the axis of the oral cavity, because of which the larynx can not be inspected in the usual way. Inspection of the larynx can be performed either with the help of a laryngeal mirror (indirect laryngoscopy), in which the laryngoscopic picture is presented in the form of a mirror image or with the help of special directories for direct laryngoscopy.