IRCT20181216041994N1 IRCT 2019-03-20 Vice-chancellors of Research and Technology, Hamedan University of Medical Sciences Evaluation of the effect of Diode 940 nm on reduction of nasal tip edema Evaluation of the effect of Diode 940 nm laser on reduction of post-rhinoplasty nasal tip edema 2019-04-09 anticipated 30 Complete https://irct.ir/trial/37418 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Patients are randomly devided into Intervention and control group via quadri-blocks. concealment will be done through Sealed Envelope, Blinding description: In the control group (Sham laser group), the device will be turned off and the handpiece will be moved on the nose and nasal holes. Meanwhile, at the time of laser and sham laser radiation, headphones will be placed on the ears of the patients. N/A nose tip edema after rhinoplasty. Intervention 1: Intervention group: 940nm Diod laser( Biolase,USA) is radiated to patient's face on eight zones of nose and nasal nostrils and also on Submandibular and jugular-digastric. Laser radiation will be continuous. Energy density: 4 J/cm2, spot size: 2.27 cm2, outputpower: 0.1 mW and the ray is radiated to each zone for 91 seconds. energy in each zone is 9.08 j. power density: 44 mW/cm2. Intervention 2: Control group: In control group( Sham laser group) the device will be turned off and the handpiece will be moved on nose and nasal nostrils. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is The clinical results of the study will generally be published in the form of an article.