Functional Endoscopic Sinus Surgery (FESS) is the mainstay in the surgical treatment of sinusitis and nasal polyps, inclusing bacterial, fungal, recurrent acute and chronic sinus problems.
FESS is a relatively recent surgical procedure that uses nasal endoscopes through the nostrils thereby avoiding cutting the skin or resulting any external scar marks on face.
Telescopes with diameters of 4mm (adult use) and 2.7mm (pediatric use) and with a variety of veiwing angles (0 degrees to 30, 45, 70, 90 & 120 degrees) provide good illumination of the inside of the nasal cavity & sinuses. High definition cameras, monitors & a host of tiny articulating instruments aid in identifying and restoring the proper drainage and ventilation relationships between the nose and sinus cavities.