This test is done to :
Nasal endoscopy involves evaluation of the nasal and sinus passages with direct vision using a magnified high-quality view. It is a commonly performed procedure in the otolaryngologist’s office and serves as an objective diagnostic tool in the evaluation of nasal mucosa, sinonasal anatomy, and nasal pathology. Nasal endoscopy may be accomplished with either a flexble fiberoptic endoscope or a rigid endoscope (see the images below). When performed by experienced practitioners, both flexible endoscopy and rigid endoscopy are usually well tolerated.