Using rhinomanometer the air current passage in the nose of 1, 336 human subjects was studied and basic figures of expiration were decided. Clinical appliance revealed that regular oval figures were normal and irregular figures with marginal defect were abnormal being encountered in cases with nasal diseases. The figures in the latter were divided into 5 basic types and these in turn could be divided into numerous intermediate types. The present method is applicable in the younger age group, since it is not accompanied by any pain.
The therapeutic effect can be determined by comparing the figures of expiration before and after operation making it easier to establish a more scientific therapeutic measure.