Pollution and Eye Irritation: Why Eyes Burn in Delhi-NCR Winter

Medically reviewed by Dr. Santosh Sinha

Author’s perspective: Anyone who has lived through a Delhi-NCR winter knows the feeling: you step outside on a smoggy morning and within minutes your eyes sting and water. I think we have come to accept this as normal, but it is worth understanding what is actually happening to our eyes and what we can do about it. Pollution is not something any of us can fix alone, but small daily habits can make a real difference to how our eyes feel through the season.

Why winter makes pollution worse

In northern India, air quality often worsens from late October through the winter. Several factors combine:

• Temperature inversion: cold air near the ground gets trapped under a layer of warmer air, so pollutants cannot rise and disperse.
• Low wind speeds: still air lets pollution build up.
• Seasonal sources: crop residue burning in neighbouring regions, firecrackers during festivals, vehicle exhaust, construction dust, and burning of waste and fuel for warmth.
• Fog and smog: moisture combines with pollutants to form thick, low-lying smog.

The result is high levels of fine particles (PM2.5 and PM10) and gases such as nitrogen dioxide, sulphur dioxide and ozone.

How pollution irritates the eyes

The eye’s surface is directly exposed to the air. It is protected by a thin tear film made of oil, water and mucus layers. Pollution can affect this in several ways:

• Particles land on the eye surface, causing a gritty, sandy feeling.
• Chemical pollutants irritate the conjunctiva, the thin layer covering the white of the eye, causing redness and burning.
• The tear film becomes unstable, leading to dryness, even though the eyes may water a lot as a reflex.
• Allergic reactions can be triggered or worsened in people who are sensitive.

Common symptoms

• Burning or stinging
• Watery eyes
• Redness
• Itching
• A gritty or sandy feeling
• Tired, heavy-feeling eyes
• Mild blurring that clears on blinking

These symptoms usually affect both eyes at the same time, worsen outdoors or during smoggy hours, and improve in cleaner air.

Pollution irritation vs eye flu

Feature	Pollution irritation	Eye flu
Both eyes at once	Usually	Often one after the other
Discharge	Watery, no thick discharge	Watery or thick, crusting on waking
Linked to	Outdoor exposure, smog, smoke	Contact with an infected person
Contagious	No	Yes
Improves in clean air	Yes	Not necessarily

Who is more affected?

• People who already have dry eyes
• Contact lens wearers
• People with allergies
• Those who spend long hours outdoors, such as traffic police, delivery workers, street vendors and commuters on two-wheelers
• Older adults, whose tear production may be lower
• People who spend long hours on screens, which reduces blinking

Simple ways to protect your eyes

Outdoors

• Wear glasses or sunglasses, ideally wraparound styles, to reduce particles reaching the eyes.
• Check the air quality index (AQI) before heading out, and avoid outdoor exercise when it is very poor.
• Avoid peak traffic hours where possible.
• Avoid standing near burning waste, bonfires or firecrackers.

Back home

• Wash your face with clean water after coming indoors, keeping eyes closed while splashing.
• Wash hands before touching your eyes.
• Do not rub your eyes, even if they itch.

Indoors

• Keep windows closed during high-pollution hours.
• Consider an air purifier for the bedroom if possible.
• Avoid indoor smoke from incense, mosquito coils or burning fuel in closed rooms.
• Use a humidifier or keep a bowl of water near a heater to reduce dry air.

Habits

• Blink often, especially during screen use. Try the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds.
• Drink enough water through the day.
• Get enough sleep, as tired eyes feel more irritated.
• Eat foods rich in omega-3s and vitamins A and C, such as flaxseed, walnuts, carrots, leafy greens and amla, for general eye health.

Contact lens wearers

• Consider switching to glasses on very polluted days.
• Follow strict lens hygiene.

Comfort measures

• Cool compresses on closed eyes can soothe burning.
• Lubricating drops: preservative-free artificial tears may help some people. Ask an eye doctor or pharmacist which is suitable.

What not to do

• Do not use steroid eye drops or any medicated drops without a prescription.
• Do not put Triphala, herbal powders, capsule contents, honey or home mixtures into your eyes.
• Do not wash your eyes with tap water forcefully or repeatedly.

When to see a doctor

See an eye doctor within one to two days if you have:

• Eye pain
• Blurred vision that does not clear on blinking
• Strong sensitivity to light
• Thick discharge
• Symptoms that do not improve indoors or after a week
• Red, painful eyes while wearing contact lenses

Seek emergency care for chemical splashes (rinse with clean running water for 15 minutes first), injuries or sudden loss of vision.

Frequently asked questions

The bottom line

Burning, watery, red eyes in Delhi-NCR winter are usually caused by pollution irritating the eye surface and tear film. Glasses outdoors, washing your face when you come home, cleaner indoor air, regular blinking and good hydration can make the season more comfortable. For ongoing dryness, our dry eyes post offers more daily habits.

Disclaimer: This article is for general information and is not medical advice. Please consult an eye doctor for persistent or severe symptoms. This article is written for adults; for children, consult a paediatrician.