Dr İsmail KAYGISIZ, graduated from Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine. He completed his residency training in Otorhinolaryngology–Head and Neck Surgery at Istanbul Training and Research Hospital. Following his residency, he worked as an Otorhinolaryngology–Head and Neck Surgery Specialist at Kars Harakani State Hospital. His academic work focuses primarily on nasal physiology, olfactory function, nasal potential difference measurements, and the functional outcomes of nasal surgery, with a particular interest in the objective assessment of olfactory function.