Can dry eye disease be cured?

Dry eye is a chronic condition that cannot always be cured, but it can be very effectively managed. Most patients achieve significant symptom relief and prevent further ocular surface damage with the right treatment regimen. For some patients - particularly those with meibomian gland dysfunction treated with heat therapy - there is meaningful long-term improvement in gland function.

Are over-the-counter artificial tears enough?

For mild, occasional dry eye symptoms, preservative-free artificial tears used 3-4 times daily are often sufficient. However, OTC drops only provide temporary lubrication - they do not address the underlying cause. If you are using drops more than 4 times a day, experiencing persistent symptoms, or have redness or blurred vision, a comprehensive dry eye evaluation is warranted.

Why does dry eye cause blurred vision?

Blurred vision in dry eye is caused by an unstable tear film over the cornea. The corneal surface is the eye's most powerful refracting surface, and any irregularity in the tear film distorts incoming light. Typically the blur improves with blinking (which refreshes the tear film) - this is a distinguishing feature of dry-eye-related blurring versus blurring from refractive error.

Is screen use causing my dry eye?

Screen use is a major contributing factor. When concentrating on a screen, the blink rate drops from the normal 12-15 blinks per minute to as low as 5-7. Incomplete blinks are also more common. This reduces tear film refresh rate and allows faster evaporation. The 20-20-20 rule (every 20 minutes, look at something 20 feet away for 20 seconds and blink fully) genuinely helps.

I live in Delhi - does the pollution make dry eye worse?

Yes, significantly. Delhi's air pollution (particulate matter, nitrogen dioxide, ozone) directly irritates the ocular surface and destabilises the tear film. Studies show higher rates and severity of dry eye in polluted urban environments. Air purifiers indoors, wraparound sunglasses outdoors, and preservative-free drops before and after outdoor exposure all help reduce the burden.

Can LASIK cause dry eye?

LASIK can cause or worsen dry eye in the post-operative period because the corneal nerves that stimulate reflex tearing are partially disrupted by the flap creation. This usually resolves within 3-6 months as nerves regenerate. Eye Veda performs a comprehensive dry eye evaluation before any laser surgery - patients with pre-existing moderate-to-severe dry eye may be better candidates for SMILE or ICL, which affect corneal nerves less.

Dry Eye Disease in Delhi: Causes, Symptoms & Treatment

What is dry eye disease?

Dry eye disease (DED) is a multifactorial condition of the tears and ocular surface that results in discomfort, visual disturbance, and tear film instability - with potential damage to the ocular surface. It is not simply about having insufficient tears. The quality and composition of the tear film matters as much as the quantity.

A healthy tear film has three layers: an outer oily layer (from meibomian glands in the eyelids), a middle aqueous layer (from the lacrimal gland), and an inner mucin layer (from goblet cells on the conjunctiva). Disruption of any layer - through evaporation, inflammation, or gland dysfunction - destabilises the film and causes symptoms.

Globally, dry eye affects an estimated 5-50% of adults depending on the population studied. In urban India, rates are high and rising, driven by environmental factors unique to cities like Delhi.

Why Delhi is a dry eye hotspot

Several factors make Delhi particularly challenging for ocular surface health:

Air quality - PM2.5, ozone, and nitrogen dioxide from traffic and industrial emissions directly inflame the ocular surface and destabilise the tear film lipid layer.
Low humidity - Delhi’s dry winters and air-conditioned offices create environments where tear evaporation rate far exceeds production.
Screen exposure - The city’s IT-heavy workforce logs some of the highest screen hours in the country. Reduced blink rate with screens is a major cause of evaporative dry eye.
Ceiling fans - Air movement across the ocular surface accelerates evaporation. Sleeping under a ceiling fan is a commonly overlooked contributing factor.

Symptoms to watch for

Dry eye symptoms are often non-specific and dismissed as tiredness or allergy. The following warrant a proper evaluation:

Burning or stinging sensation

Gritty or sandy feeling in the eyes

Redness, especially in the evening

Blurred vision that improves with blinking

Watery eyes (reflex tearing)

Sensitivity to light

Difficulty with screen use, reading, or driving

Heavy or tired eyes by end of day

Discomfort or intolerance of contact lenses

A distinctive feature of dry eye is that blurred vision improves with blinking - as the blink refreshes the tear film. If your vision blurs and then clears when you blink, dry eye is a likely contributor.

Types of dry eye

Understanding which type of dry eye a patient has guides treatment. The two main types often coexist:

Aqueous deficient dry eye (ADDE)

The lacrimal gland does not produce enough aqueous (watery) tears. This is less common and is associated with conditions like Sjogren’s syndrome, lacrimal gland disease, or as a side effect of certain medications (antihistamines, antidepressants, diuretics, beta-blockers).

Evaporative dry eye (EDE)

The most common type - accounting for around 85% of all dry eye. Tears evaporate too quickly because the oily outer layer is deficient. The primary cause is meibomian gland dysfunction (MGD) - the oil-secreting glands in the eyelids become blocked or atrophied. Blepharitis (lid margin inflammation) is a closely related condition.

How dry eye is diagnosed

A comprehensive dry eye evaluation at Eye Veda includes:

Symptom questionnaire - OSDI or SPEED score to quantify symptom burden
Slit-lamp examination - assessment of lid margins, meibomian gland orifices, conjunctival redness, and corneal surface
Tear break-up time (TBUT) - fluorescein dye is instilled and the time until the first dry spot appears in the tear film is measured. Less than 10 seconds indicates instability.
Schirmer’s test - a strip of filter paper placed under the lower lid measures aqueous tear production over 5 minutes
Corneal staining - fluorescein or Rose Bengal dye reveals epithelial damage from desiccation
Meibography - infrared imaging of the eyelids to assess meibomian gland structure and identify dropout (loss of gland tissue)

Treatment options at Eye Veda

Dry eye treatment is stepwise - starting with conservative measures and escalating based on severity. Dr. Surabhi Dutt leads cornea and dry eye care at Eye Veda and tailors treatment to each patient’s phenotype.

All stages

Preservative-free artificial tears

The foundation of dry eye management. Preservative-free formulations are essential for frequent use - preserved drops used more than 4 times daily can themselves damage the ocular surface.

Mild - Moderate

Omega-3 supplementation

High-dose EPA/DHA omega-3 (1-2g daily) reduces lid margin inflammation and improves meibomian gland secretion quality over 3 months. Strong evidence from the DREAM study.

MGD

Warm compress & lid hygiene

10 minutes of warm compress (40-45°C) twice daily melts solidified meibomian gland secretions. Followed by lid massage to express oils. A simple, free and highly effective first step.

Moderate - Severe MGD

Intense Pulsed Light (IPL)

Light energy applied to the skin around the eyelids reduces lid margin inflammation and improves meibomian gland function. 4 sessions 3-4 weeks apart. Long-lasting benefit for moderate-severe MGD.

Moderate - Severe

Cyclosporin eye drops

Prescription anti-inflammatory drops (Restasis, Ikervis) that reduce T-cell mediated inflammation on the ocular surface. Takes 3-6 months to achieve full effect. Used for aqueous-deficient and inflammatory dry eye.

Moderate - Severe

Punctal plugs

Tiny silicone plugs inserted into the tear drainage openings (puncta) to retain tears on the eye surface longer. Quick in-office procedure. Particularly effective for aqueous-deficient dry eye.

Practical steps you can take today

Switch to preservative-free artificial tears - use them before symptoms peak, not just after
Apply a warm compress to closed eyelids for 10 minutes, morning and evening
Follow the 20-20-20 rule when using screens
Increase indoor humidity with a humidifier, particularly in AC environments
Wear wraparound sunglasses outdoors to reduce wind and pollution exposure
Take regular omega-3 supplements (fish oil or algal DHA/EPA)
If you sleep under a ceiling fan, try pointing it away from your face

Written by Dr. Surabhi Dutt MS (Ophthalmology) — Cornea & Glaucoma Specialist

Medically reviewed by Dr. Nikhil Pal MBBS, MS (Ophthalmology) — Vitreo-Retinal Surgeon

Dry Eye Disease in Delhi: Causes, Symptoms & Modern Treatments