Laryngoscopy is an exam of the voice box (larynx). It can be done using a small mirror held just below the back of your palate, or a rigid or flexible viewing tube called a laryngoscope placed in your mouth.
In some cases, you may need anesthesia.
King EF, Couch ME. History, physical examination, and the preoperative evaluation. In: Flint PW, Haughey BH, Lund LJ, et al, eds. Cummings Otolaryngology: Head & Neck Surgery. 6th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 4.