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[The principle of the three-dimensional visual environment of the operating field in rhinosurgery].

RELEVANCE
Traditional endoscopes that create a two-dimensional image cannot provide stereoscopic imagining of the operating field, which does not allow simultaneous synchronization of visual perception with the surgeon's handwork. The operator still achieves in-depth perception through tactile and visual cues, such as the interaction of instruments or the continuous movement of the endoscope.


OBJECTIVE
To examine the three-dimensional visual environment for the operating field in endoscopic rhinosinus surgery based on the stereopsis phenomenon.


RESULTS
Thanks to multi-spiral computed tomography, we have examined the functional structure features of ram's synonasal region, and described the system of the accessory nasal cavities. We practiced, and compared the techniques of endoscopic rhinosinus surgery using traditional methods versus a three-dimensional visual environment. As a result, we found the advantages of the live surgery in a virtual reality helmet, confirmed by the NASA Task Load Index questionnaire.


CONCLUSION
The use of a virtual reality helmet in rhinosurgery allows the operator to work in a three-dimensional visual environment based on the phenomenon of stereopsis, as a qualitatively improved method of surgical wound videoscopy.