Eye allergies are extremely common in Gurgaon. Dust, pollution, pollen, and air conditioning; often all in the same day; make allergic eye disease one of the most frequent complaints I see in my clinic. It is a disease of the ocular surface, and invariably associated with dry eyes.

The medical term is allergic conjunctivitis. It means the conjunctiva, the thin transparent membrane covering the white of your eye, has reacted to an allergen. The result is redness, itching, watering, and swelling. It is not contagious. You cannot catch it from someone else, and they cannot catch it from you.

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What Causes Eye Allergies?

The most common trigger in Gurgaon is airborne. This includes dust, vehicle exhaust, construction dust, and pollen from seasonal plants. These particles land on the surface of the eye and set off an immune response. Your immune system treats them as a threat. Mast cells in the conjunctiva release histamine. That histamine is what causes the itching, redness, and watering.

Common causes include:

Seasonal triggers. Pollen from grasses, trees, and weeds. In Delhi-NCR, spring and the post-monsoon transition are the worst periods. Mould spores during the monsoon also cause flares.

Perennial triggers. Dust mites, pet dander, cockroach allergens, and smoke. These cause low-grade symptoms all year round. Air conditioning, paradoxically, can help by filtering air, but poorly maintained AC units recirculate allergens.

Contact triggers. Eye makeup, contact lens solutions, preservatives in eye drops, and certain skin creams that migrate toward the eyes. These cause localised reactions that patients often mistake for infections.

Vernal keratoconjunctivitis. A more severe, chronic form seen mainly in young boys in hot climates. It causes intense itching, a ropy mucus discharge, and large cobblestone-like bumps under the upper eyelid. It needs specialist attention because it can affect the cornea.

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What Are the Symptoms of Eye Allergy?

The most reliable sign is intense itching. If your eyes itch, think allergy first. Infections hurt; allergies itch.

Other symptoms include:

• Redness of the white of the eye
• Watering and tearing
• Swelling of the eyelids, especially on waking
• A burning or gritty feeling
• Sensitivity to light
• Ropy or stringy mucus discharge (more common in vernal keratoconjunctivitis)
• Temporary blurring of vision when mucus is present

Itching that gets worse when you rub your eyes. Rubbing your eyes makes the itch worse, this is a classic pattern. Rubbing releases more histamine and creates a cycle. Resist the urge. Rubbing hard and repeatedly can, over time, contribute to a corneal condition called keratoconus.

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Eye Allergy vs Conjunctivitis: How to Tell the Difference

Both cause red, watery eyes. The key differences are:

If you are unsure, see your doctor before starting any eye drops. Steroid drops, which are appropriate for some allergy cases, can cause serious harm if used for an infection. Steroid eyedrops should only be taken when prescribed by your doctor.

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Treatment of Eye Allergy

Avoid the trigger first

Identifying and removing the cause is the most effective treatment. This is not always possible, but some steps help consistently:

• Use wrap-around sunglasses outdoors. They reduce pollen and dust reaching the eye by a significant margin.
• Keep windows closed during high-pollen periods. Use air purifiers indoors.
• Change pillowcases frequently. Dust mites live in bedding.
• Remove eye makeup before sleeping and review your makeup products if symptoms started around the same time you changed brands.
• Cold compresses, a clean cotton pad soaked in cold water held over the closed eyes, reduce swelling and soothe itching quickly.

Medical treatment

Preservative-free lubricating eye drops (artificial tears) dilute allergens and flush them off the eye surface. They also ease dryness. These are safe to use frequently and are usually the first step.

Antihistamine eye drops block the histamine response and give faster symptom relief. They reduce redness and itching. Many are available over the counter, but prescription-strength options work better for moderate to severe cases.

Mast cell stabiliser eye drops work differently — they prevent mast cells from releasing histamine in the first place. They need to be started before allergy season begins and used consistently. They are not effective for acute relief, but they reduce the overall severity of the season.

Combination drops that contain both an antihistamine and a mast cell stabiliser are now available and are often the most practical option for patients with seasonal disease.

NSAID eye drops (non-steroidal anti-inflammatory agents) reduce inflammation and ease discomfort without the risks associated with steroids.

Steroid eye drops are reserved for severe cases that do not respond to other treatments. They are effective but carry real risks, elevated eye pressure, cataract formation, and susceptibility to infection- with prolonged use. They must be used only under medical supervision, with regular monitoring of eye pressure. Do not buy them over the counter.

Oral antihistamine tablets can help when symptoms include nasal congestion or skin symptoms alongside eye symptoms, suggesting a more generalised allergic response.

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The Glaucoma and Steroid Drops Warning

This is worth saying directly. Steroid eye drops, even short courses, can raise intraocular pressure in susceptible individuals. If you have glaucoma, a family history of glaucoma, or have previously been told you have high eye pressure, you must tell your doctor before starting any steroid drops. Steroid-induced glaucoma is preventable, but only if your doctor knows your risk.

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When Should You See a Doctor?

Most mild eye allergies can be managed with lubricating drops and allergen avoidance. See your doctor if:

• Symptoms are not improving after a few days of self-care
• There is significant pain, not just itching
• Vision is affected
• The discharge is thick and yellow or green
• Symptoms are in a child who is rubbing their eyes excessively
• You have been using steroid drops bought from a pharmacy for more than two weeks

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A Note on Eye Rubbing and Children

Children with eye allergies rub their eyes constantly. Parents often interpret this as infection and reach for antibiotic drops — which do nothing for allergies. The more important risk is corneal damage from chronic rubbing. If your child’s eyes itch repeatedly during certain seasons, have them seen by an ophthalmologist. A diagnosis of allergic conjunctivitis in a child also warrants a check for refractive error — children with uncorrected vision sometimes rub their eyes for reasons unrelated to allergy, and the two can coexist.

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This page was written by Dr Shibal Bhartiya, fellowship-trained glaucoma specialist and Mayo Clinic Research Collaborator, Clinical Director of Ophthalmology at Marengo Asia Hospitals, Gurugram. For appointments: +91 88826 38735.

Read the research articles

This article has been written by Dr Shibal Bhartiya, a fellowship trained eye specialist in Gurgaon known for ethical, patient-centred glaucoma care and independent glaucoma second opinions. She is also a research collaborator with Mayo Clinic, Jacksonville, Florida, USA. This article has been updated in March, 2026.

She has published peer-reviewed research on eye care, examining how treatment decisions should balance medical evidence, patient preferences, and long-term vision outcomes.

These peer-reviewed article discussing eye care are benchmarks for glaucoma surgeons globally, and can be accessed on PubMed and Google Scholar

If you would like a structured glaucoma risk assessment or second opinion about your symptoms/ treatment:

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