What is Rhinology? This is a subspecialty of ENT that deals with diseases of the nose and the sinuses including Rhinitis (nasal allergy). It also involves treating diseases close to the nose such as prominent eyes in thyroid disease, and watery eyes caused by blocked tear ducts in addition to excision of tumours (benign and malignant) in this area. Much of the surgery is nowadays performed via the endoscopic approach (key hole surgery)