unctional Endoscopic Sinus Surgery (FESS) is a minimally invasive procedure designed to address chronic sinusitis, nasal polyps, and various sinus-related issues. The surgery utilizes an endoscope, which is a slender tube equipped with a camera and light, enabling the surgeon to see the sinus passages and eliminate blockages. Unlike conventional sinus surgery that necessitates external incisions, FESS is conducted entirely through the nostrils, making it a favored choice due to its minimal scarring and quicker recovery time. FESS provides several benefits compared to traditional sinus surgery,