Why is rhinology lagging behind?

Dear Sir, When a patient complains of decreased hearing, we have an audiogram to quantify the hearing loss. We cannot imagine treating a patient with decreased vision or hypertension without objectively measuring them. In rhinology though, when a patient complains of nasal block, rhinomanometry is almost never done to quantify the nasal airflow. What is more worrying is that, the selection procedure for septal surgery is purely based on subjective assessment, which is open to errors and inconsistencies because of the variability of the perception of nasal block between the patient and the physician. The importance of an objective measurement for nasal airflow has been appreciated as early as 1895 by Kayser 1 , but quantification of nasal airflow is still not a routine clinical practice inspite of the advancement in rhinomanometry.