Rhinoplasty surgery aims to change the shape of the nose. Some people are born with noses that are out of proportion with the rest of the face or may have a shape which is deemed unaesthetic. Many people seeking rhinoplasty have had a previous injury or broken nose that may have left them with asymmetry or other deformity. The operation involves reshaping the bone and cartilage of the nose to improve the size and shape but can also improve the nasal airway in people with breathing difficulties.
Further information about this procedure can be found here
http://www.plasticsurgeryfoundation.org.au/patient-information/procedures/cosmetic-surgery/nose-surgery/