Changes in the nasal conchae, also in the posterior sections, secretion paths in the middle nasal meatus, and concealed ethmoid bone polyps in the infundibular region are detected at an earlier stage. Since April this year the telescope has been used for daily routine endoscopy in our practice. The considerable enhancement of luminous efficiency created by the standard 150 watt cold light illumination is noticeable. At a guess the endoscopic image is approx. The circle of view has also become larger with photographic documentation the edge of the image circle borders on the upper edge of the 36 mm transparency.
Projection thus produces a much larger image.
The optical qualities of the 45 telescope were determined in a self-developed measuring system which has already been found reliable in video technology. The depth of focus is 4.0 mm to infinity. Due to the higher light intensity the depth of field is larger. The telescope can be fully autoclaved at 134 C. Under Cat. 7210 FA the telescope is available with the familiar light entrance at the bottom.