Eye Allergy: Causes, Symptoms, and Treatment

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.

Dr Shibal Bhartiya is a fellowship-trained eye specialist and Mayo Clinic Research Collaborator with over 25 years of experience. Her approach focuses on identifying risk before damage is irreversible, simplifying treatment decisions, and protecting vision long-term. Emphasis on early detection, risk assessment, and continuity of care. She is rated 5 stars across 1,500+ patient reviews on Google.

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.

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.

Eye Allergy vs Conjunctivitis: How to Tell the Difference

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

	Eye Allergy	Infective Conjunctivitis
Itching	Intense	Mild or absent
Discharge	Watery or ropy	Sticky, yellow or green pus
Both eyes affected	Usually	Often starts in one eye
Contagious	No	Often yes
Associated with cold or fever	Rarely	Sometimes

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.

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.

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.

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

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.

FAQs: Eye Allergy

What is eye allergy and what causes it?

Eye allergy, also called allergic conjunctivitis, occurs when the eyes react to an allergen such as dust, pollen, smoke, pet hair, or cosmetic products. The immune system triggers inflammation of the conjunctiva, causing redness, itching, swelling, and watering.

What are the symptoms of eye allergy?

Symptoms include intense itching, redness, watering, swelling of the eyelids and conjunctiva, a burning or gritty sensation, and sensitivity to light. Unlike infective conjunctivitis, discharge is usually clear and watery rather than thick or coloured.

What is the difference between seasonal and perennial eye allergy?

Seasonal allergic conjunctivitis occurs at specific times of year, typically triggered by pollen or mould spores. Perennial allergic conjunctivitis is present throughout the year and is usually triggered by dust mites, pet hair, smoke, or indoor pollutants.

Is eye allergy contagious?

No. Allergic conjunctivitis is not contagious and does not spread from person to person. This distinguishes it from viral or bacterial conjunctivitis, which can spread through direct or indirect contact.

How do I know if my red itchy eye is allergy or infection?

Allergy usually causes intense itching, clear watery discharge, and symptoms in both eyes. Infection more commonly causes thick coloured discharge, one eye affected first, and may be associated with recent contact with an infected person. A doctor can confirm the cause on examination.

Can dust and pollution in Gurgaon make eye allergy worse?

Yes. High ambient dust and pollution levels in Gurgaon and the Delhi-NCR region are common triggers for perennial allergic conjunctivitis. Seasonal pollen from trees and grass adds to the burden during spring and monsoon months. Wearing wrap-around sunglasses outdoors and using preservative-free lubricant drops after outdoor exposure can help reduce the allergen load on the eye surface.

What eye drops are used to treat eye allergy?

Treatment depends on severity. Preservative-free lubricant drops reduce allergen load and improve comfort. Antihistamine drops reduce redness and the allergic response. Mast cell stabiliser drops provide longer-term protection, especially for seasonal and perennial allergy. NSAID drops reduce inflammation. Steroid drops are reserved for severe cases not responding to other treatment and must be used under medical supervision.

Are steroid eye drops safe for eye allergy?

Steroid drops are effective for severe allergic eye disease but carry risks with prolonged use, including raised eye pressure and cataract. They must only be used under the supervision of an eye doctor and are not a first-line treatment.

Can rubbing the eyes during an allergy attack cause long-term damage?

Yes. Repeated vigorous eye rubbing during allergic episodes is associated with keratoconus — a progressive thinning and forward bulging of the cornea. Cold compresses and antihistamine drops are safer ways to relieve the itching urge.

When should I see an eye doctor for eye allergy?

See an eye doctor if symptoms are severe, persistent, or affecting vision; if there is significant eyelid swelling; if antihistamine drops are not helping; or if you are unsure whether the cause is allergy or infection. Steroid drops should only be started after a proper examination.

Read the research articles

This article was written by Dr Shibal Bhartiya, fellowship-trained glaucoma specialist and Mayo Clinic Research Collaborator, Clinical Director at Marengo Asia Hospitals, Gurugram, known for ethical, patient-centred glaucoma care and independent glaucoma second opinions. This article was edited in April 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.

As Editor-in-Chief of Clinical and Experimental Vision and Eye Research and Executive Editor of the Journal of Current Glaucoma Practice (Pubmed Indexed, official journal of the International Society of Glaucoma Surgery), Dr Shibal Bhartiya brings editorial and research depth to every clinical decision. Her 200+ publications, including 90+ PubMed-indexed publications and 28 edited textbooks span glaucoma biology, surgical outcomes, health equity, and emerging diagnostics.

Her work can be accessed on Pubmed, Google Scholar, ResearchGate and ORCID.

Dr Shibal Bhartiya
Glaucoma • Second Opinion • Advanced Care

www.drshibalbhartiya.com
+91 88826 38735

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Dry Eye

When the eye does not produce adequate tears, or if the quality of the tears produced is poor, or in case the tears get evaporated at a speed greater than normal, the eyes may feel gritty and tired. This is called dry eye.

The surface of the eye may get inflamed along with dryness. If left untreated, this may lead to discomfort, pain, ulceration and scarring of the cornea.

Dry eye can make working on the computer or reading uncomfortable, and can also decrease the tolerance to dry, arid environments (including airplanes, and air-conditioned spaces).

Any disease process that alters the components of tears can make them unhealthy and result in dry eye.
The symptoms of dry eye include:

• Stinging or burning of the eye
• Gritty feeling, feeling a foreign body in the eye
• Excessive tearing
• Stringy discharge from the eye
• Pain and redness
• Episodes of blurred vision which may improve on blinking
• Decreased contact lens tolerance
• Discomfort while reading, working on the computer
• General eye fatigue
Causes of dryness of the eye include:

• Diseases of the eyelids such as meibomian gland dysfunction, lagophthalmos, increased size of palpebral fissure due to thyroid disease, trauma
• Pregnancy
• Menopause, and hormone replacement therapy
• Post- LASIK.
• Following chemical and thermal burns
• Infrequent blinking
• Long-term contact lens wear
• Dry eye can be associated with disorders such as Sjögren’s syndrome, lupus, and rheumatoid arthritis.
• Exposure to pollutants and irritants
• Thyroid disease and diabetes
• Facial nerve palsy
• Side effect of some medications, including anti allergics, tranquilizers, certain blood pressure medicines, Parkinson’s medications, contraceptive pills and anti-depressants.

Treatment of dry eye is an ongoing process. In case the underlying cause can be identified, it is treated while providing supportive therapy to ensure symptomatic relief.

Usually, your eye doctor will prescribe tear supplements (eye drops and gels) to keep you comfortable, the nature and frequency of which will be determined by disease severity. Preservative free tear supplements work best for dry eye.

Cyclosporine, an anti-inflammatory medication, is the only prescription drug available to treat dry eye. It is known to increase basic tear production, and reduce symptoms.

Your doctor may offer to insert punctal plugs into your eyes. These are small plugs that are inserted into the punctum of the eye, the drainage holes in your eyelid, that connect the eyes to your nose and throat. These plugs are made of silicone or collagen, are reversible, and do not cause any discomfort following insertion.

In some patients supplements or dietary sources (such as tuna fish) of omega-3 fatty acids may decrease symptoms of irritation.

Other supportive measures which may help you be more comfortable include:

• Wearing glasses or sunglasses (wrap around)
• Using a humidifier indoors
• Decreasing screen time
• Avoiding contact lens use
• Remembering to blink

LASIK Eye Surgery: Are You a Candidate? What to Expect, and What to Ask

LASIK is one of the most commonly performed elective surgeries in the world. For the right patient, it delivers reliable, lasting spectacle freedom. For the wrong patient, it can cause complications that are difficult to reverse.

The question is not simply whether you want LASIK. The question is whether your eyes are suitable for it.

What Is LASIK?

LASIK stands for Laser In Situ Keratomileusis. It uses an excimer laser to reshape the cornea, the clear front surface of the eye, so that light focuses accurately on the retina. The result, in suitable candidates, is clear vision without glasses or contact lenses.

The procedure is performed as a day case under topical anaesthetic eye drops. It takes approximately 10 to 15 minutes per eye. A thin flap is created on the corneal surface, the underlying corneal tissue is reshaped with the laser, and the flap is repositioned. Vision improves within 24 hours for most patients.

LASIK corrects myopia (short-sightedness), hypermetropia (long-sightedness), and astigmatism.

Am I Suitable for LASIK?

Not everyone is a candidate. Suitability depends on a detailed pre-operative evaluation that includes corneal thickness mapping, topography, refraction stability, and assessment of the ocular surface. A thorough evaluation takes time and should not be rushed.

You are likely suitable if:

You are 18 years or older, your glasses prescription has been stable for at least 12 months, your corneas are of adequate thickness and normal shape, your eyes are healthy with no active surface disease, and you are not pregnant or breastfeeding.

You are not suitable if:

Your prescription is still changing. Your corneas are thin or show irregular topography suggesting early keratoconus. You have keratoconus or a family history of it. You are pregnant or breastfeeding : hormonal changes alter corneal shape and refractive measurements are unreliable. You have severe dry eye. You have had certain types of previous eye surgery.

Relative contraindications, discuss carefully with your surgeon:

Autoimmune conditions such as rheumatoid arthritis or lupus can affect corneal healing. Uncontrolled diabetes alters corneal wound healing. Contact sports like boxing, wrestling, martial arts, carry a risk of flap displacement after LASIK; surface-based procedures (PRK or SMILE) may be safer alternatives. A history of uveitis, iritis, or herpetic eye disease requires careful evaluation.

LASIK and Glaucoma: An Important Caution

This is an area that deserves more attention than it typically receives.

LASIK permanently alters corneal thickness and biomechanics. This changes how eye pressure is measured. After LASIK, standard Goldmann applanation tonometry, the most widely used method for measuring eye pressure, tends to underestimate the true intraocular pressure. This means that after LASIK, a pressure reading that appears normal may actually be higher than it looks.

For patients being monitored for glaucoma or glaucoma suspect status, or for patients with a family history of glaucoma, this has practical consequences. Your ophthalmologist must know you have had LASIK so that pressure readings can be interpreted correctly. Devices such as the Pascal dynamic contour tonometer or corrected pressure formulas are used to adjust for post-LASIK corneal changes.

Glaucoma is also a relative contraindication to LASIK, not necessarily an absolute one, but it requires careful assessment. If you have glaucoma or are being monitored for it, discuss this explicitly with your surgeon before proceeding.

LASIK vs Other Laser Vision Correction Procedures

LASIK is not the only option. Several alternatives exist, and in some patients they are preferable.

PRK (Photorefractive Keratectomy): The surface layer of the cornea (epithelium) is removed rather than creating a flap. No flap means no risk of flap-related complications. Recovery is slower. Vision takes several days to stabilise, and the eye is more uncomfortable initially. PRK is preferred for patients with thinner corneas, those in contact sports, and some patients with surface disease.

SMILE (Small Incision Lenticule Extraction): A newer technique. A femtosecond laser creates a small lens-shaped disc of corneal tissue (a lenticule) which is removed through a small incision. No flap is created. SMILE is associated with less post-operative dry eye than LASIK, and is a good option for patients with mild to moderate dry eye who would otherwise not be ideal LASIK candidates. Currently approved for myopia and myopic astigmatism.

ICL (Implantable Collamer Lens): A lens is implanted inside the eye, in front of the natural lens, without removing corneal tissue. This is the preferred option for patients with high prescriptions outside the range of laser correction, very thin corneas, or keratoconus. The procedure is reversible.

The right procedure depends on your prescription, corneal measurements, dry eye status, lifestyle, and risk tolerance. A good surgeon will present the options honestly, including the option of not having surgery.

What to Expect: Before, During, and After LASIK

Before surgery:

Contact lens wearers must stop wearing lenses before evaluation: soft lenses for at least one week, rigid gas-permeable lenses for several weeks. Lenses alter corneal shape, and measurements taken while lenses are still being worn are unreliable.

The pre-operative evaluation includes corneal topography and tomography, pachymetry (corneal thickness measurement), pupil size assessment, dry eye evaluation, and a full refraction. The surgeon will review all findings before confirming candidacy.

On the day of surgery:

The procedure takes 10 to 15 minutes per eye. Anaesthetic drops are instilled, there are no injections. A speculum holds the eye open. A suction ring is applied briefly to create the flap. The laser treatment lasts less than a minute per eye. You may notice a clicking sound and a smell during the laser application, both are normal.

After surgery:

Vision improves within hours for most patients. The eyes are comfortable by the following morning in the majority of cases, though mild fluctuation and halos around lights are common in the first few weeks. Antibiotic and anti-inflammatory drops are prescribed for the first week. Avoid rubbing the eyes. Avoid swimming and dusty environments for two to four weeks. Driving is usually possible within 24 to 48 hours once vision is confirmed adequate.

Dry eye after LASIK:

LASIK cuts corneal nerves during flap creation, reducing corneal sensitivity and tear production temporarily. Most patients notice increased dryness for three to six months after surgery. Preservative-free lubricating drops are used during this period. In patients with pre-existing dry eye, symptoms can persist longer. This is one reason pre-operative dry eye evaluation is important.

Realistic Expectations

LASIK achieves 20/20 vision or better in the majority of suitable candidates. Most patients achieve spectacle independence for distance vision.

However, LASIK does not prevent the need for reading glasses in your forties. Presbyopia, the age-related loss of near focusing ability, affects everyone and is not corrected by LASIK. Patients in their late thirties and forties considering LASIK should understand this before surgery.

A small percentage of patients require an enhancement procedure, a repeat laser treatment, to fine-tune the outcome. This is more common at higher prescriptions.

Night vision symptoms like halos, glare, and starbursts around lights are common in the first few weeks and usually settle. In a minority of patients they persist, particularly those with large pupils or high prescriptions. Modern laser platforms and wavefront-guided treatment have reduced but not eliminated this risk.

Questions to Ask Your Surgeon Before LASIK

A good pre-operative consultation should give you clear answers to all of these:

Am I a good candidate based on all my measurements, not just my prescription?
Which procedure do you recommend for me, and why?
What is my risk of dry eye after this procedure?
What is my corneal thickness and how much tissue will be removed?
Do I have any early signs of keratoconus on my topography?
What happens if my vision regresses over time?
How will LASIK affect future eye pressure readings?
If I develop glaucoma in future, will this surgery have made it harder to monitor?
Is LASIK safe for me?
What about side effects?

If a surgeon dismisses these questions or rushes the consultation, seek a second opinion before proceeding.

FAQs: LASIK Eye Surgery

What is LASIK and how does it work?

LASIK uses an excimer laser to reshape the cornea, correcting the focusing error that causes dependence on glasses or contact lenses. A thin flap is created on the corneal surface, the laser reshapes the underlying tissue, and the flap is replaced. The procedure takes 10 to 15 minutes per eye and is performed under anaesthetic eye drops.

Am I a good candidate for LASIK?

You are likely suitable if you are over 18, your prescription has been stable for at least 12 months, your corneas are of adequate thickness and normal shape, and you have no active eye disease or significant dry eye. A detailed pre-operative evaluation is the only way to confirm suitability — prescription alone is not enough.

What is the minimum age for LASIK?

LASIK is not performed below the age of 18. In practice, most surgeons prefer to wait until the mid-twenties when prescriptions are more likely to have stabilised, particularly in patients with progressive myopia.

Can LASIK correct all types of refractive errors?

LASIK corrects myopia, hypermetropia, and astigmatism within certain ranges. Very high prescriptions may be outside the safe range for corneal laser surgery, and an ICL (implantable lens) may be a better option. Your pre-operative measurements will determine the range that can safely be treated.

Will I still need reading glasses after LASIK?

LASIK corrects distance vision. It does not prevent presbyopia, the age-related loss of near focusing ability that affects everyone from their early to mid-forties. If you are already using reading glasses, LASIK will not eliminate that need. Patients in their forties should discuss monovision options before surgery.

What is the difference between LASIK, SMILE, and PRK?

LASIK creates a flap and uses an excimer laser to reshape the cornea beneath it. PRK removes the surface epithelium and reshapes the surface directly: no flap, slower recovery, but preferred for thinner corneas and contact sport athletes. SMILE uses a femtosecond laser to remove a small disc of corneal tissue through a tiny incision with no flap, associated with less post-operative dry eye. The right choice depends on your corneal measurements, dry eye status, and lifestyle.

Can I have LASIK if I have glaucoma?

Glaucoma is a relative contraindication to LASIK, not an absolute one. More importantly, LASIK permanently changes corneal thickness and biomechanics, which affects how eye pressure is measured. After LASIK, standard pressure readings may underestimate true intraocular pressure. For any patient with glaucoma, glaucoma suspect status, or a strong family history of glaucoma, this must be discussed carefully with both the refractive surgeon and the glaucoma specialist before proceeding.

Does LASIK cause dry eye?

LASIK cuts corneal nerves during flap creation, temporarily reducing corneal sensation and tear secretion. Most patients experience some degree of dry eye for three to six months after surgery. Pre-existing dry eye is a relative contraindication. SMILE is associated with less post-operative dry eye than LASIK and may be preferable for patients with mild dry eye symptoms.

Is LASIK permanent?

The corneal reshaping from LASIK is permanent. However, some patients experience gradual regression, a partial return of the original prescription, over years, particularly at higher corrections. An enhancement procedure can address regression. LASIK also does not prevent future changes in the eye such as cataract or presbyopia.

What should I avoid after LASIK surgery?

Avoid rubbing the eyes flap displacement is most likely in the early post-operative period. Avoid swimming and water sports for four weeks. Avoid dusty environments. Do not wear eye makeup for one week. Follow your antibiotic and anti-inflammatory drop schedule as prescribed. Driving is usually possible within 24 to 48 hours once vision is confirmed adequate by your doctor.

Read the research articles

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

Her work can be accessed on Pubmed, Google Scholar, ResearchGate and ORCID.

Dr Shibal Bhartiya
Glaucoma • Second Opinion • Advanced Care

www.drshibalbhartiya.com
+91 88826 38735

Patient reviews Google Business Profile

Upload your reports for a structured review.

Cataract: Causes, Symptoms, and Surgery Options

Cataract is the most common cause of reversible blindness in the world. In India, it accounts for roughly half of all blindness. The good news: it is entirely treatable. A straightforward surgical procedure, done as a day case under local anaesthesia, can restore vision that has been diminishing for years.

Cataract develops when the natural lens of the eye, which sits behind the iris and is normally transparent, becomes cloudy. Light can no longer pass through cleanly. The result is a progressive blurring and dimming of vision that no glasses can fully correct.

Most cataracts are age-related. But cataract is not exclusively a disease of old age.

Dr Shibal Bhartiya explains. She is a fellowship-trained glaucoma specialist and Mayo Clinic Research Collaborator with over 25 years of experience. Her approach focuses on identifying risk before damage is irreversible, simplifying treatment decisions, and protecting vision long-term. Emphasis on early detection, risk assessment, and continuity of care. She is rated 5 stars across 1,500+ patient reviews on Google.

What Causes Cataract?

Age is the commonest cause. The lens proteins break down gradually over decades, clumping together and losing their transparency. Almost everyone will develop some degree of lens clouding by their seventies.

Diabetes accelerates cataract formation significantly. Patients with poorly controlled blood sugar develop cataracts earlier and faster than the general population. If you have diabetes and notice a rapid change in your glasses prescription, get your eyes examined promptly, this can be an early sign of diabetic lens changes. You can read more about diabetes and the eye here.

Steroids: both oral and topical (including steroid eye drops used long-term) are a well-recognised cause of posterior subcapsular cataract. This type of cataract affects near vision and causes significant glare. If you are on long-term steroid treatment for any reason, annual eye examinations are important.

Eye trauma can cause cataract at any age. A blunt or penetrating eye injury can damage the lens directly, or disrupt the capsule that holds the lens in place, leading to rapid clouding.

Congenital cataract is present at birth or develops in early childhood. It must be identified and treated early to prevent amblyopia, the permanent visual impairment that occurs when a child’s visual system does not develop normally because a clear image is not reaching the retina.

UV radiation and smoking both increase oxidative stress on the lens and contribute to earlier cataract development.

Previous eye surgery including certain glaucoma surgeries, can accelerate cataract formation.

Symptoms of Cataract

Cataract develops slowly. Most people adapt gradually and do not notice the change until it is significant. The classic symptoms are:

Blurred or hazy vision that is not corrected by a change of glasses
Reduced vision in dim light and difficulty driving at night
Glare and halos around lights, especially headlights and streetlights
Frequent changes in glasses prescription
Fading or yellowing of colours
Double vision or ghost images in one eye
A feeling that you need brighter light to read

One early sign worth knowing: some people with a developing nuclear cataract experience temporary improvement in near vision, sometimes called “second sight.” Reading glasses that were previously necessary are suddenly not needed. This improvement is short-lived and followed by deterioration.

When Should You Have Cataract Surgery?

The decision to operate is based on two things: how much the cataract is affecting your daily life, and whether any other eye condition is present that may complicate surgery or limit the visual outcome.

There is no universal threshold. A cataract that prevents a surgeon from driving or a teacher from reading the board is a different functional problem than the same density of opacity in someone with less visually demanding work.

Your doctor may recommend earlier surgery if:

The cataract is dense enough to prevent adequate examination or treatment of the retina or optic nerve, particularly relevant in glaucoma patients
A mature or hypermature cataract is causing raised eye pressure (phacomorphic glaucoma)
A congenital cataract is threatening normal visual development in a child

Not sure about your diagnosis? You are not alone.

Many patients come to Dr Bhartiya after receiving a diagnosis elsewhere: unsure whether to start treatment or surgery, concerned about long-term progression, or simply wanting clarity before committing to a plan.

A second opinion is not a sign of distrust. It is good medicine.

Request a Second Opinion →

Cataract Surgery in Gurgaon

All modern cataract surgery is performed as a day case, under topical anaesthesia (eye drops, no injections around the eye in most cases), and takes 15 to 30 minutes per eye.

Phacoemulsification

This is the standard of care worldwide and the most commonly performed cataract surgery. A small incision of approximately 2.2 mm is made in the cornea. An ultrasound probe breaks the cloudy lens into tiny fragments, which are then aspirated out of the eye. A foldable intraocular lens (IOL) is inserted through the same incision. The wound is self-sealing. This means that no stitches are needed. Recovery is fast, with most patients seeing clearly within a day or two.

Microincision Cataract Surgery (MICS)

A refinement of phacoemulsification, MICS uses an incision of 1.8 mm or smaller. The smaller wound causes less surgically-induced astigmatism and heals faster. It is the preferred technique in most modern cataract centres.

Femtosecond Laser-Assisted Cataract Surgery (FLACS)

A laser is used to perform several of the initial steps of surgery: the corneal incision, the opening of the lens capsule (capsulotomy), and the pre-fragmentation of the lens, with a precision that the human hand cannot replicate. The remaining steps are completed with standard phacoemulsification. FLACS is particularly useful when premium IOLs are being implanted, as the precision of the capsulotomy improves lens centration. You can read more about femtosecond laser-assisted cataract surgery here.

Choosing Your Intraocular Lens (IOL)

The IOL that replaces your natural lens is a permanent implant. Choosing the right one is an important decision.

Monofocal IOL: the standard IOL. It corrects vision at one distance, usually set for distance. You will need reading glasses after surgery. Covered by most insurance.

Multifocal IOL: corrects vision at multiple distances using different zones in the lens. Many patients achieve spectacle independence for both distance and near. Trade-offs include some loss of contrast sensitivity and potential for glare or halos at night. Not suitable for everyone, particularly those who drive extensively at night or have certain corneal conditions.

Toric IOL: corrects pre-existing astigmatism at the time of cataract surgery. If you currently need a cylindrical component in your glasses, a toric IOL can address this and reduce your dependence on glasses for distance vision.

Extended Depth of Focus (EDOF) IOL: a newer lens design that provides a continuous range of clear vision from distance to intermediate, with fewer halos than traditional multifocal lenses. Good for patients who spend significant time at a computer.

Monovision: an alternative approach where one eye is corrected for distance and the other for near, using monofocal lenses. Some patients adapt extremely well; others find it uncomfortable. A trial with contact lenses before surgery can help predict how you will tolerate it.

Your surgeon will discuss which option suits your eye measurements, lifestyle, and visual demands.

Cataract Surgery and Glaucoma

These two conditions frequently coexist, and their interaction is clinically important. A few key points:

Cataract surgery can lower intraocular pressure modestly in many patients. In eyes with narrow angles or angle-closure glaucoma, removing the thick natural lens can open the drainage angle significantly, reducing pressure. For some patients, cataract surgery alone may reduce the need for glaucoma drops.

Conversely, certain glaucoma surgeries, particularly trabeculectomy, can accelerate cataract formation. If you have had glaucoma surgery in the past, discuss the implications for your surgical approach with your ophthalmologist before cataract surgery.

Combined cataract and glaucoma surgery is sometimes appropriate. Minimally invasive glaucoma surgery (MIGS) procedures can be performed at the same time as cataract surgery, lowering eye pressure while restoring vision in a single operative episode. Read more about glaucoma surgery options here.

After Cataract Surgery: What to Expect

Vision improves within 24 to 48 hours for most patients
Antibiotic and anti-inflammatory eye drops are prescribed for 4 to 6 weeks
Avoid rubbing the eye
Avoid swimming and dusty environments for two to four weeks
Driving may resume once your doctor confirms adequate visual acuity in the operated eye
Final glasses prescription is given 4 to 6 weeks after surgery, once the eye has stabilised

A small percentage of patients develop posterior capsular opacification (PCO), sometimes called “secondary cataract”, months to years after surgery. This is not a recurrence of the original cataract. It is a thickening of the membrane behind the IOL, and is treated very simply with a brief laser procedure (YAG capsulotomy) in the outpatient clinic.

Prevention

Cataract cannot be prevented entirely. But the following reduce your risk or slow progression:

Control blood sugar if you have diabetes
Wear UV-protective sunglasses outdoors
Stop smoking
Avoid long-term steroid use without ophthalmological monitoring
Annual eye examinations after the age of 40

Frequently Asked Questions

What are the early signs of cataract?

Early cataract causes blurred or cloudy vision, increased glare, and frequent changes in your glasses prescription. Colours may appear faded or yellowed.

At what age does cataract usually develop?

Cataract most commonly develops after age 50 as part of natural ageing. It can also affect younger adults, children, and rarely, newborns.

Is cataract surgery safe?

Phacoemulsification is one of the most commonly performed and safest surgeries in the world. Most patients return to normal activities within a few days.

Will I need glasses after cataract surgery?

This depends on the lens implanted. A standard monofocal lens corrects distance vision. A multifocal lens reduces dependence on glasses for both distance and near work.

Can cataract come back after surgery?

The cataract itself does not return after surgery. Some patients develop a secondary cloudiness called posterior capsule opacification. This is easily treated with a laser procedure.

How do I know if my cataract needs surgery now?

Surgery is recommended when the cataract affects your daily activities — driving, reading, or working — regardless of how it looks on examination.

Can cataract and glaucoma occur together?

Yes. Cataract and glaucoma frequently coexist, especially in older adults. Both conditions require separate evaluation and sometimes benefit from combined surgical management.

What is the difference between phacoemulsification and MICS?

Phacoemulsification uses a 2.2mm incision. MICS (Microincision Cataract Surgery) uses a smaller 1.8mm incision. MICS causes less astigmatism and allows faster healing.

Read the research articles

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

Her work can be accessed on Pubmed, Google Scholar, ResearchGate and ORCID.

Dr Shibal Bhartiya
Glaucoma • Second Opinion • Advanced Care

www.drshibalbhartiya.com
+91 88826 38735

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Diabetes and the Eye

How diabetes can affect your eyes and vision and what you can do about it, Dr Shibal Bhartiya, fellowship trained eye specialist, explains. Diabetes is a systemic disease that affects many organs, including the eyes. One of the most important complications is damage to the retina, the light sensitive tissue at the back of the eye that sends visual signals to the brain. This damage usually develops slowly and without pain, which is why many patients remain unaware until vision is affected.

Modern diabetic eye care focuses on early detection, risk assessment, and prevention of long term damage. With regular screening and timely treatment, most serious vision loss from diabetes can be avoided.

Known for her structured approach to vision risk assessment and progression analysis, Dr Shibal Bhartiya provides trusted second opinions for patients seeking clarity before major treatment decisions.

How diabetes affects vision

High blood sugar damages small blood vessels throughout the body. The retina depends on these delicate vessels to function properly. Over time, diabetes can cause these vessels to leak fluid, bleed, or become blocked.

When this happens, the retina does not receive enough oxygen. In advanced stages, the eye may try to compensate by forming abnormal new blood vessels. These vessels are weak and unstable and can cause serious complications.

This entire process may begin years before symptoms appear. This is why routine retinal screening is recommended for all diabetic patients.

What are the most common eye problems caused by diabetes

Diabetes increases the risk of several eye conditions including:

• Diabetic retinopathy
• Diabetic macular edema
• Cataract at a younger age
• Glaucoma

Diabetic retinopathy remains the most important because it is one of the leading causes of preventable blindness worldwide.

Patients with diabetes should also be evaluated for glaucoma because optic nerve damage can occur silently. You can read more about glaucoma risk assessment and early detection in glaucoma screening evaluations.

What is diabetic retinopathy

Diabetic retinopathy develops when retinal blood vessels become damaged due to prolonged exposure to high blood sugar levels.

In early stages, small vessel changes may be visible only on examination. Vision may remain normal. As damage increases, leakage and reduced blood supply can begin to affect vision.

In advanced stages, new abnormal vessels may grow. This stage, called proliferative diabetic retinopathy, carries a higher risk of bleeding and retinal detachment.

Early diagnosis allows treatment before permanent vision damage occurs.

What is diabetic macular edema

The macula is the part of the retina responsible for detailed central vision. When fluid accumulates in this area, it causes diabetic macular edema.

Patients may notice blurred reading vision, distortion of straight lines, or difficulty recognising faces. OCT scanning is often used to detect early fluid accumulation before major vision loss occurs.

Why diabetic patients may develop cataract earlier

Patients with diabetes often develop cataract earlier than non diabetic individuals. Vision may become cloudy and glare may increase, especially while driving at night.

Before cataract surgery, retinal evaluation is important to ensure that diabetic retinopathy is not missed. Sometimes retina treatment may be needed before or after cataract surgery.

Why glaucoma risk increases in diabetes

Diabetes slightly increases therisk of glaucoma, particularly open angle glaucoma. Since glaucoma causes permanent optic nerve damage, early detection is important.

Patients with diabetes may benefit from periodic optic nerve evaluation, visual field testing, and OCT nerve fibre analysis when indicated. Understanding optic nerve risk early helps prevent avoidable vision loss.

More about Glaucoma and Diabetes

Diabetes is associated with a higher risk of glaucoma, particularly primary open angle glaucoma. The exact relationship is complex, but long standing diabetes may make the optic nerve more vulnerable to damage due to vascular changes and reduced ability to tolerate pressure related stress. In addition, diabetic patients may develop secondary glaucomas such as neovascular glaucoma in advanced diabetic retinopathy. Because glaucoma causes silent and irreversible vision loss, diabetic patients should undergo periodic optic nerve evaluation, eye pressure measurement, and visual field testing when indicated. Early detection remains the most effective way to prevent permanent damage.

Who is at higher risk of diabetic eye damage

The risk of diabetic eye disease increases with:

• Duration of diabetes
• Poor sugar control
• High HbA1c
• High blood pressure
• High cholesterol
• Kidney disease
• Smoking

However, even well controlled patients can develop retinopathy. This is why screening is recommended for everyone with diabetes.

Symptoms of diabetic eye disease

Diabetic eye disease often has no early symptoms. When symptoms occur, they may include:

• Blurred vision
• Fluctuating vision
• Floaters
• Dark spots
• Distortion
• Sudden vision drop

Waiting for symptoms is risky because damage may already be advanced. Screening before symptoms appear remains the safest approach.

How often should diabetics get eye screening

Patients with type 2 diabetes should ideally have an eye examination at diagnosis. Patients with type 1 diabetes should begin screening within five years.

After this, yearly screening is usually recommended. Some patients may need more frequent follow up depending on findings.

A personalised follow up plan based on risk is better than fixed routine visits.

What tests are done in diabetic eye screening

A comprehensive diabetic eye evaluation may include vision testing, eye pressure measurement, and dilated retinal examination.

Retinal photography helps document baseline findings. OCT scans help detect macular edema. Visual field testing and optic nerve OCT may be advised if glaucoma risk is present.

A thoughtful risk based approach avoids both missed disease and unnecessary investigations.

How to protect your vision if you have diabetes

Vision protection depends on both medical care and daily habits. Maintaining stable blood sugar remains the most important step. Blood pressure and cholesterol control also play an important role.

Regular exercise, medication adherence, and avoiding smoking improve long term outcomes. Annual retinal screening remains one of the most effective preventive measures.

Patients who maintain stable long term follow up usually preserve better vision than those who seek care only when symptoms appear.

Treatment options for diabetic eye disease

Treatment depends on the severity of disease. Early retinopathy may only require observation and systemic control. Laser treatment may be advised in certain stages to reduce progression risk.

Macular edema is commonly treated with intravitreal injections that reduce fluid and stabilise vision. Advanced disease may require vitrectomy surgery.

The goal of treatment is long term stability and prevention of irreversible damage.

Common mistakes diabetic patients make about eye care

Some common mistakes include:

Skipping eye exams because vision seems normal.
Getting glasses repeatedly without retina evaluation.
Assuming fluctuating vision is always due to spectacles.
Seeking care only after vision drops.
Not understanding glaucoma risk.

Delayed care is the most common cause of avoidable vision loss in diabetic patients.

When should you consider a second opinion

A second opinion may be useful if:

Retinopathy is progressing.
Multiple injections are being advised.
Vision is worsening despite treatment.
Glaucoma risk is suspected.
Surgery has been suggested.

A structured risk assessment can often clarify the best long term plan.

Not sure about your diagnosis? You are not alone.

Many patients come to Dr Bhartiya after receiving a diagnosis elsewhere: unsure whether to start treatment, concerned about long-term progression, or simply wanting clarity before committing to a plan.

A second opinion is not a sign of distrust. It is good medicine.

Request a Second Opinion →

Key message

Diabetic eye disease is common but vision loss is often preventable. The most important step is regular screening even when vision feels normal.

Early detection protects future vision. Prevention is always easier than late treatment.

Consultation for diabetic eye evaluation or second opinion

If you have diabetes and want a detailed eye evaluation or a second opinion regarding diabetic eye disease, you may schedule a consultation.

When should a person with diabetes see an eye specialist?

People with diabetes should have a comprehensive eye examination at least once a year, even if vision seems normal. Diabetic eye disease often develops silently and vision may remain clear until significant damage has already occurred.

You should see an eye specialist earlier if you notice:

• Blurred or fluctuating vision
• Difficulty reading
• Dark spots or floaters
• Poor night vision
• Sudden change in glasses number

Early detection is the most important factor in preventing permanent vision loss from diabetes.

Can diabetic eye damage be reversed?

Early diabetic eye changes can often be stabilised if detected in time. Good blood sugar control, regular monitoring, and timely treatment can prevent progression in many cases.

However, advanced diabetic retinopathy may cause permanent damage. This is why regular screening is critical — treatment works best before vision is affected.

Treatment options may include:

• Observation with strict diabetes control
• Laser treatment
• Eye injections
• Surgery in advanced cases

The goal of treatment is usually to prevent further loss rather than restore lost vision, which is why early diagnosis matters.

Why diabetic eye disease is often missed in routine eye exams

Diabetic eye disease may not always be detected during routine vision testing because early damage affects the retina and optic nerve before it affects clarity of sight.

Many patients are told their vision is “normal” because they can read the chart, but this does not rule out early diabetic damage.

Some common reasons diabetic eye disease may be missed include:

• Vision tests only check clarity, not retinal health
• Early disease may not cause symptoms
• Patients may delay dilated retinal examination
• Diabetes duration may be underestimated
• Damage can progress between annual visits

This is why a targeted retinal evaluation is important for patients with diabetes rather than relying only on glasses checks.

Early detection allows monitoring and treatment before vision loss occurs.

Frequently asked questions about diabetes and eye problems

Can diabetes cause blindness?

Yes, uncontrolled diabetes can cause vision loss through diabetic retinopathy, macular edema, glaucoma, and cataract. Regular eye examinations greatly reduce this risk.

Is diabetic retinopathy painful?

No. Diabetic retinopathy usually develops without pain or early symptoms, which is why many patients delay screening.

Does good sugar control protect the eyes?

Yes. Good HbA1c control significantly reduces the risk of diabetic eye disease progression.

Can vision improve after diabetic eye treatment?

Sometimes swelling-related vision loss can improve, but damage from late disease may not fully recover.

Do I need screening if my vision is normal?

Yes. Many patients with diabetic retinopathy have normal vision initially.

Read the research articles

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

Her work can be accessed on Pubmed, Google Scholar, ResearchGate and ORCID.

Dr Shibal Bhartiya
Glaucoma • Second Opinion • Advanced Care

www.drshibalbhartiya.com
+91 88826 38735

Patient reviews Google Business Profile

Upload your reports for a structured review.