Retrospective Study
Copyright ©The Author(s) 2024.
World J Otorhinolaryngol. Aug 9, 2024; 11(2): 18-24
Published online Aug 9, 2024. doi: 10.5319/wjo.v11.i2.18
Table 1 Classification of endoscopic ear surgery according to Cohen’s classification9
Class
Extent of endoscope usage
0None
1For inspection only
2a< 50% of the surgical dissection
2b> 50% but < 100% of the surgical dissection
3Entire surgery