OBJECTIVES: The objective of this study was to investigate the impact of computational fluid dynamics (CFD) and 3D virtual surgery on reducing variability in nasal surgery and improving patient outcomes. METHODS: We analyzed the pre- and post-CFD feedback results of six otolaryngologists who performed virtual surgery on two patients with nasal obstruction. The CFD analysis was used to evaluate the airflow parameters, including QR (right nasal flow rate), QL (left nasal flow rate), Ф (symmetry of the flow) and R (bilateral nasal resistance). The outcomes were compared before and after CFD feedback, and the variability in the surgical approaches of the specialists was assessed. RESULTS: The results indicated a significant reduction in variability among the specialists after incorporating CFD feedback into their virtual surgical planning. The standard deviation for both patients decreased, and the differences between the maximum and minimum values were reduced for all measured parameters. Furthermore, the average values of the parameters approached the basal levels, suggesting a more consistent and effective surgical approach across the surgeons. CONCLUSIONS: The integration of CFD and 3D virtual surgery techniques in otolaryngology can substantially reduce variability in surgical planning and decision-making, ultimately leading to improved patient outcomes. These advanced tools have the potential to standardize the diagnosis and treatment of nasal pathologies, contributing to more effective and consistent care. Future research in this area should focus on larger patient cohorts and further exploration of the potential benefits and applications of CFD and virtual surgery in otolaryngology.