Especially the WOLF endoscope system in Germany:

The leap-forward transformation in the field of rhinology, the famous German WOLF nasal endoscope system, has superior performance and is called the "third eye" of doctors. In the diagnosis and treatment, the advantages of multi-angle and large field of vision of nasal endoscope are used to directly peep into the details of nasal cavity and nasopharynx, so that the diseased parts are magnified several times and displayed on the monitoring system to accurately locate and perform fine surgery. It has the advantages of painless, minimally invasive, quick recovery and remarkable effect.