Prospective, multicenter, randomized clinical study to evaluate the clinical efficacy and tolerability of long term mixed ultraviolet and visible light phototherapy in eosinophil nasal polyps

- UV phototherapy induces apoptosis of eosinophils and T-cells.
- Evaluate the efficacy and tolerability of mUV/VIS phototherapy in CRSwNP
- Mixed UV/VIS phototherapy has a therapeutic effect in CRSwNP.