Septum deviation is the shift of the bone and/or cartilage that divides the nasal cavity from the midline. The most important symptom is unilateral or bilateral long-term nasal congestion. ⠀ ⠀ In septum deviation surgery (septoplasty); The obstructing septum is corrected and an attempt is made to ensure that it remains properly in the midline. The external appearance of the nose does not change after septoplasty surgery.⠀ ⠀ When deciding on septoplasty, the patient’s complaints and the negative effects of nasal congestion on health and quality of life are taken into consideration, as well as the nasal examination findings.