Eye Burns or Stings: Why Your Eyes Burn and What Helps

Why eyes burn or sting

The cornea, the clear front window of the eye, has one of the densest nerve supplies in the body. Anything that dries, inflames or chemically irritates its surface or the lining of the lids (conjunctiva) is felt as burning or stinging. The eye responds by watering and turning red, which is why burning, redness and tearing so often appear together.

Common causes

Dry eye

Dry eye is the most common cause of burning eyes in adults. The tear film is too thin or evaporates too quickly. Typical features:

• burning, gritty or sandy feeling, worse later in the day
• worse with screens, reading, driving, air conditioning, wind and flights
• blurry vision that clears with blinking
• paradoxical watering, because the irritated eye produces reflex tears

Risk factors include age over 50, menopause, contact lenses, laser eye surgery, and medicines such as antihistamines, some antidepressants and isotretinoin. Dry eyes with a dry mouth can point to Sjogren's syndrome.

Blepharitis and meibomian gland dysfunction

Blepharitis is inflammation of the eyelid margins. The oil glands along the lids (meibomian glands) become blocked, so tears evaporate fast. Eyes burn, especially in the morning, with red, crusty or greasy lid edges. It is common with rosacea and dandruff.

Allergies

Allergic conjunctivitis causes itching first, then burning, watering and puffy lids, usually in both eyes. It often comes with sneezing and a runny nose, and follows pollen, pets or dust.

Irritants

• smoke, smog and fumes
• chlorine in swimming pools
• shampoo, soap, makeup, eyeliner and sunscreen
• onion vapor, perfume and aerosol sprays

These cause stinging that improves within minutes to hours after rinsing.

Screen use and eye strain

People blink up to half as often when concentrating on a screen, so tears evaporate. Burning and tired eyes build through the workday.

Infections

Viral and bacterial conjunctivitis cause red, gritty, burning eyes with watery or sticky discharge. Viral infections often start in one eye and spread to the other.

Serious causes not to miss

• Chemical eye burns: alkalis such as oven cleaner, drain cleaner, lime and cement penetrate deeply and are especially dangerous. Acids such as battery acid also burn. Immediate flushing protects sight.
• Corneal abrasion or foreign body: sharp stinging, watering and a sensation that something is in the eye.
• Contact lens keratitis: infection of the cornea, linked to sleeping or swimming in lenses. Pain, redness, light sensitivity and a white spot.
• UV keratitis ("snow blindness" or welder's flash): intense burning and grittiness 6 to 12 hours after unprotected UV exposure.
• Uveitis and acute glaucoma: deep pain, redness around the cornea, blurred vision and light sensitivity.

Comparing the main causes

How doctors find the cause

An optometrist or ophthalmologist will ask when the burning occurs, whether one or both eyes are affected, about contact lenses, screen time, medicines, allergies and exposures, then examine the eye with a slit lamp microscope. Fluorescein dye highlights scratches, dry spots and ulcers under blue light. Tear tests (such as tear breakup time) measure tear quality. Pressure is measured if glaucoma is possible.

Relief and treatment

First aid for a chemical in the eye

1. Rinse immediately with clean running water or saline for at least 15 to 20 minutes, holding the lids open.
2. Remove contact lenses during rinsing if they do not come out on their own.
3. Do not rub the eye or try to neutralize the chemical.
4. Seek emergency care, bringing the chemical's label if possible.

Home care for everyday burning

• Artificial tears: use preservative-free drops if you need them more than 4 times a day.
• Warm compresses: a warm, clean cloth or heated eye mask on closed lids for 5 to 10 minutes, then gently massage the lids. This loosens blocked oil glands.
• Lid hygiene: clean the lash line with diluted baby shampoo or commercial lid wipes.
• The 20-20-20 rule: every 20 minutes, look at something 6 m (20 ft) away for 20 seconds.
• Humidify dry indoor air and point car and fan vents away from your face.
• Wear goggles for swimming and wraparound glasses outdoors on windy days.
• Antihistamine eye drops for allergy, and avoid rubbing.
• Avoid "redness-relief" drops long term; they can cause rebound redness.

Medical treatment

Prescription anti-inflammatory drops (such as cyclosporine or lifitegrast), punctal plugs to keep tears in the eye, antibiotic treatment for blepharitis or infection, and urgent specialist treatment for chemical injury, keratitis, uveitis or glaucoma.

Frequently asked questions

Why do my eyes sting and burn?

The most common reasons are dry eye, allergies, irritants such as smoke, chlorine or makeup, and blepharitis (inflamed eyelid margins). Long screen sessions make it worse because you blink less. Burning with pain, blurred vision or light sensitivity needs an eye exam.

How do I stop my eyes from burning?

Rinse out any irritant, use artificial tears, apply warm compresses, take screen breaks and avoid smoke and wind. Antihistamine drops help if allergy is the cause. If burning persists beyond 2 weeks or comes with pain or vision changes, see an eye doctor.

Are burning eyes a sign of something serious?

Usually not. Most burning comes from dry eye or irritation. It is more serious after a chemical splash, with severe pain, blurred vision, light sensitivity, in contact lens wearers with redness, or with a rash on the forehead. Those need same-day care.

Can burning eyes be caused by allergies?

Yes. Allergic conjunctivitis causes itchy, burning, watery eyes, usually in both eyes, often with sneezing and a runny nose. Antihistamine eye drops, cool compresses and avoiding the trigger usually help. Itching is the clue that separates allergy from dry eye.

Should I see a doctor for burning eyes?

See an eye doctor if burning lasts more than 2 weeks, keeps recurring, affects your vision, or you wear contact lenses and the eye is red and painful. Go immediately after a chemical splash, injury, or with severe pain and vision loss.