ENDOSCOPY AND OTOMICROSCOPY IN THE ESTIMATION OF MIDDLE-EAR STRUCTURES

In order to study the variation within and between endoscopy and otomi croscopy a Gage repeatability and reproducibility design was created, with which the middle ears were studied of eight cadaver temporal bone blocks through the ear canal three times in random order using both m ethods. A Zeiss OPMI-1 operating microscope and Olympus endoscopes wer e used. The data were analysed in accordance with the analysis of vari ance principle, where the total variation was divided into different c omponents. The anatomical areas were counted and registered via quadra nts. There was a distinct difference between the results of the two me thods in favour of the endoscopes. Furthermore, the variation between the methods and between the trials was analogous.