For people with long-standing sinus problems that have not improved with medicines, Functional Endoscopic Sinus Surgery (FESS) can be life-changing. It restores normal sinus drainage and breathing — all through the nostrils, with no external cuts. Here is a clear, complete guide to what FESS involves.
What is FESS?
FESS is a minimally invasive surgery that uses a thin telescope called an endoscope to see inside the nose and sinuses. Through the natural openings of the nostrils, the surgeon gently opens the blocked drainage pathways of the sinuses and removes obstructions such as polyps or diseased tissue. The aim is to restore the sinuses' own natural drainage — hence the word "functional."
Who needs FESS?
FESS is considered when medical treatment has not been enough, for conditions such as:
- Chronic sinusitis that persists despite proper medicines
- Nasal polyps blocking the nose and sinuses
- Recurrent sinus infections
- Certain structural blockages affecting sinus drainage
- Some cases requiring access to the sinuses for other reasons
Your ENT will usually confirm the need with a nasal endoscopy and a CT scan.
How is the procedure done?
- Performed under anaesthesia for your comfort
- The surgeon passes the endoscope through the nostril — no external incision
- Blocked sinus openings are carefully widened
- Polyps or diseased tissue are removed
- The natural drainage of the sinuses is restored
Because everything is done through the nose, there is no facial scar.
Benefits of FESS
- Improved sinus drainage and easier breathing
- Relief from facial pressure, congestion and recurrent infections
- Often an improved sense of smell
- No external cuts or visible scars
- Precise, targeted surgery that preserves healthy tissue
Risks to be aware of
Like any surgery, FESS carries some risks, which your surgeon will discuss with you. These are uncommon in experienced hands, and the procedure has an excellent overall safety record. A thorough pre-operative assessment helps keep the procedure safe.
Patient preparation
Before surgery, you may be advised to:
- Complete any prescribed medicines or nasal preparation
- Share your full medical history and current medications
- Follow fasting instructions for anaesthesia
- Arrange for someone to accompany you home
Recovery and post-operative care
Recovery is usually smooth:
- Most people go home the same day or after a short stay
- Mild congestion and light discharge are normal at first
- Saline nasal rinses are important to keep the nose clean and aid healing
- Strenuous activity and nose blowing are limited briefly
- Follow-up visits allow the surgeon to clean and check the healing sinuses
Most people return to light routine within a few days to a week, with the sinus lining healing fully over several weeks.
Long-term outcomes
FESS provides lasting relief for the majority of patients with chronic sinusitis and polyps. The best long-term results come from combining surgery with good ongoing care — managing allergies, using saline rinses, and attending follow-up. This keeps the sinuses healthy and reduces the chance of problems returning.
Frequently asked questions
Is FESS major surgery? It is minimally invasive, done through the nostrils with no external cut.
Will it scar my face? No, there are no external incisions.
How long is recovery? Light routine within a few days to a week; full healing over several weeks.
The bottom line
FESS is a safe, scar-free and highly effective way to treat chronic sinusitis and nasal polyps when medicines are not enough. By restoring the sinuses' natural drainage, it helps you breathe, sleep and live more comfortably — with lasting results when paired with good follow-up care.
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