From the Idea to Its Realization: The Evolution of Minimally Invasive Techniques in Neurosurgery
Figure 9
Nitze endoscope. (a) Nitze endoscope with a light source at the tip of the instrument and lenses at the tip and approximately at the middle of the shaft. (b) Principle of the Nitze endoscope. The optic is a Keppler telescope producing a virtual zoomed upside down image.
