Due to its central location, the nose plays a prominent role in addressing the central facial axis which helps at camouflaging a large proportion of facial asymmetry. It gives the standard norm to the facial expressions, any little nasal deviation result in conspicuous facial disharmony and are often attended by nasal airway disfunction. The nasal deviation causes a cosmetic deformity that is often disconcerting for patients. Nasal deviation carries considerable risk at the nasal airflow by increasing the nasal valve resistance at the level of mid vault and/or lower alar structures.The lack of objective measurement of the external nasal deviation puts the professions at risk of standardizing the severity of the deviation. It deprives the nasal plastic surgeons of having a common thought about the most likely convenient and available techniques for correcting the deviation in upper, middle, and lower thirds and nasal root as the grade of deviation is indicated.This work is licensed under Creative Commons Attribution 4.0 License OJOR.MS.ID.000509.