Transtympanic endoscopy provides a unique opportunity to view, undisturbed, the contents of the middle ear. Flexible and rigid endoscopes with diameters of 2 mm and smaller are now available with adequate resolution to perform exploration of the middle ear. Endoscopes can be introduced through a myringotomy or an existing perforation in the tympanic membrane to examine the middle ear in the office setting, thus reducing the need for exploratory surgery.
Michail M. Pankratov,
Dennis S. Poe,
Arun K. Gadre,
Elie E. Rebeiz,
"Endoscopy of the middle ear", Proc. SPIE 1649, Optical Fibers in Medicine VII, (1 August 1992); doi: 10.1117/12.60252; https://doi.org/10.1117/12.60252