Dry Eyes: Symptoms, Causes and Treatment

Dry eye disease is one of the most common eye conditions worldwide, and it is becoming even more common with heavy screen use. It develops when your eyes cannot maintain a healthy layer of tears, either because they do not make enough tears, or because the tears evaporate too quickly. The surface of the eye is left dry and irritated, causing a gritty, burning, or tired feeling and, at times, blurred vision. Dry eye is rarely dangerous, but it can be persistent and genuinely affect your comfort and quality of life. With an accurate diagnosis, it is very treatable.

Overview , What Is Dry Eye Disease?

Dry eye disease (also called dry eye syndrome, or medically, keratoconjunctivitis sicca) is a long-term condition in which the tear film that protects the surface of your eye becomes unstable. Every time you blink, a thin film of tears spreads across the front of the eye to keep it smooth, nourished, and protected.

In dry eye, this film breaks down too soon or is not replenished properly, so the surface is repeatedly exposed and irritated. Over time this can cause inflammation, which itself worsens the dryness, creating a cycle that often needs treatment to break.

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How Your Tears Work (The Tear Film)

Understanding dry eye is easier once you know that tears are not just water. The tear film has three layers, and a problem in any of them can cause dry eye:

  • The oily (lipid) layer , outer: produced by the meibomian glands in your eyelids. It seals the tear film and slows evaporation. If these glands are blocked or not working well, tears evaporate too fast.
  • The watery (aqueous) layer , middle: produced mainly by the lacrimal glands. It hydrates the eye and washes away debris. If too little is produced, the eye is under-lubricated.
  • The mucus (mucin) layer , inner: produced by cells on the eye surface. It helps the watery layer spread evenly and stick to the eye. If it is deficient, tears do not coat the surface properly.

Because dry eye can start in any of these layers, finding out which part of the tear film is failing is central to treating it correctly.

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Types of Dry Eye

Dry eye is broadly divided into two main types, though many people have a combination of both:

  • Evaporative dry eye: the most common type. Tears evaporate too quickly, usually because the oil (lipid) layer is inadequate. It is often linked to meibomian gland dysfunction, blocked or poorly functioning oil glands in the eyelids.
  • Aqueous-deficient dry eye: the eyes do not produce enough of the watery part of tears. It is associated with ageing, certain medications, and autoimmune conditions such as Sjogren’s syndrome.

Identifying the type matters because the treatment differs, evaporative dry eye focuses on the eyelid glands and reducing evaporation, while aqueous-deficient dry eye focuses on supplementing and retaining tears.

Types of Dry Eye

Symptoms of Dry Eyes

Dry eye symptoms usually affect both eyes and can fluctuate through the day, often worse after screen use or in dry environments. Common symptoms include:

  • A stinging, burning, or scratchy sensation
  • A gritty feeling, as if something is in the eye
  • Redness and irritation
  • Stringy mucus in or around the eyes
  • Sensitivity to light (photophobia)
  • Eye fatigue and difficulty with prolonged reading or screen work
  • Blurred vision that clears when you blink
  • Difficulty wearing contact lenses
  • Watery eyes: dryness can trigger a reflex flush of tears, so paradoxically, watering eyes can be a symptom of dry eye.

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Causes and Risk Factors

Dry eye is usually multifactorial, several things often contribute at once. Common causes and risk factors:

Lifestyle and environment

  • Prolonged screen time (reduced blink rate)
  • Dry, dusty, air-conditioned, or windy surroundings
  • Contact lens wear

Age, hormones and health

  • Ageing, dry eye is more common as we get older
  • Hormonal changes, especially in women around menopause
  • Medical conditions such as diabetes, thyroid disorders, and autoimmune diseases (Sjogren’s syndrome, rheumatoid arthritis)

Eyelid and gland problems

  • Meibomian gland dysfunction (blocked eyelid oil glands), a leading cause of evaporative dry eye
  • Blepharitis (eyelid inflammation)

Medication and surgery

  • Certain medicines, including some antihistamines, decongestants, antidepressants, and blood pressure drugs
  • After refractive surgery such as LASIK, which can cause temporary dryness

How Dry Eyes Are Diagnosed

Because dry eye has several causes and types, a proper assessment is what makes treatment effective. Rather than simply prescribing drops, our specialists at Krishna Netralaya work out whether you have dry eye, which type it is, and what is driving it. A dry eye assessment may include:

  • Symptom and history review: your symptoms, screen and lifestyle habits, medications, and any related health conditions. A structured symptom questionnaire may be used.
  • Slit-lamp examination: a microscope with a bright light to examine the tear film, cornea, conjunctiva, and eyelid margins in fine detail.
  • Tear break-up time (TBUT): measures how many seconds the tear film stays stable after a blink, a short time points to evaporative dry eye.
  • Schirmer test: a small paper strip measures how much tear your eye produces over a set time, helping identify aqueous-deficient dry eye.
  • Ocular surface staining: harmless dyes (such as fluorescein) highlight dry or damaged spots on the eye surface, showing how the dryness is affecting the cornea and conjunctiva.
  • Meibomian gland assessment: examining, and sometimes imaging, the eyelid oil glands to check for dysfunction.

Severity: Mild, Moderate and Severe

Treatment depends heavily on how advanced the dry eye is. Broadly:

  • Mild: occasional dryness, mild irritation, worse with screens or air-conditioning. Managed with lifestyle changes and lubricating drops.
  • Moderate: more frequent symptoms with some effect on vision and daily tasks. Managed with regular lubricants, treating eyelid and gland problems, and addressing inflammation.
  • Severe: persistent discomfort, surface damage, and significant impact on life. Managed with advanced and in-clinic treatments and close specialist follow-up.

Treatment Options

Dry eye treatment is tailored to the type, cause, and severity. The goal is to restore a stable, comfortable tear film, protect the eye surface, and treat any underlying driver such as gland dysfunction or inflammation. Options, often used in combination, include:

Lifestyle and self-care measures

For mild dry eye, simple steps often make a real difference: regular screen breaks, conscious blinking, a humidifier, good hydration, and protecting the eyes from wind, dust, and direct air.

Lubricating eye drops (artificial tears)

Artificial tears and gels supplement your natural tears. Preservative-free drops are preferred for frequent use. Your specialist will match the type to your dry eye, thicker gels or ointments may be advised for night-time.

Eyelid care for gland dysfunction

When evaporative dry eye is driven by meibomian gland dysfunction or blepharitis, warm compresses, lid massage, and eyelid hygiene help unblock and clean the oil glands so the tear film’s oily layer works better.

Reducing inflammation

Because dry eye often involves inflammation of the eye surface, prescription anti-inflammatory eye drops may be used to break the dryness-inflammation cycle.

Keeping tears on the eye: punctal plugs

Punctal plugs are tiny, reversible inserts placed in the tear drainage ducts to keep your natural and artificial tears on the eye surface for longer. They are often used in moderate to severe or aqueous-deficient dry eye.

Advanced in-clinic treatments

For stubborn evaporative dry eye, in-clinic treatments that target the eyelid oil glands may be considered.

The right combination is decided after a full assessment. To find the approach that suits your eyes, book a consultation.

What to Expect

Dry eye is usually a condition that is managed well rather than cured once and for all, but with the right treatment most people gain significant, lasting relief. Mild dry eye often settles quickly with drops and lifestyle changes. Moderate to severe or gland-related dry eye typically needs a consistent routine and periodic follow-up, so treatment can be reviewed and adjusted as your eyes respond. Your specialist will set realistic expectations for your specific case.

Outlook / Prognosis

For most people, dry eye is manageable and does not cause lasting vision loss when treated appropriately. Because dry eye can involve a self-reinforcing cycle of dryness and inflammation, starting the right treatment earlier tends to make control easier. Left unmanaged, severe or long-standing dry eye can damage the ocular surface and affect vision and comfort, which is why timely diagnosis matters. With proper care, the outlook is good.

Prevention and Self-Care

You cannot always prevent dry eye, particularly when it is age, hormone, or health related, but you can lower your risk and ease symptoms:

  • Follow the 20-20-20 rule: every 20 minutes of screen time, look about 20 feet away for 20 seconds
  • Blink fully and often, especially on screens and while reading
  • Use a humidifier in dry or air-conditioned rooms
  • Position screens slightly below eye level to reduce the exposed eye surface
  • Stay well hydrated and eat a balanced diet
  • Protect eyes from wind, dust, and direct air from fans, vents, and A/C
  • Follow proper contact lens hygiene and give your eyes lens-free breaks

When to See a Doctor

Book an eye assessment if you have:

  • Dryness or irritation that does not improve with over-the-counter drops
  • Persistent redness, pain, or a gritty sensation
  • Blurred or fluctuating vision
  • Symptoms that interfere with reading, screens, driving, or contact lens wear

Ongoing dry eye deserves a proper diagnosis rather than only being masked with drops, especially since untreated dry eye can worsen. If your symptoms persist, book a consultation at Krishna Netralaya.

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Have more questions about Dry Eye? Schedule a consultation with our Cornea Specialist Dr. Aditi Agarwal.

Disclaimer: All information, provided above is for informational purposes only and is not intended to serve as a substitute for the consultation, diagnosis, and/or medical treatment of a qualified physician or healthcare provider. Read our full disclaimer here.

Frequently Asked Questions

Most dry eye is mild and manageable, but persistent or severe dry eye can inflame and damage the eye surface and affect vision if left untreated. If symptoms do not settle with over-the-counter drops, have your eyes assessed.

The two main types are evaporative dry eye, where tears evaporate too fast (often due to eyelid oil-gland problems), and aqueous-deficient dry eye, where the eye does not make enough of the watery part of tears. Many people have a mix of both.

Dry eye is usually managed rather than permanently cured, particularly when age or health related. With the right treatment, most people get significant and lasting relief.

Watering can be a reflex response to dryness and irritation: the surface is not properly lubricated, so the eye produces a burst of tears. Watery eyes can therefore be a sign of dry eye.

Yes. Screens reduce how often you blink, letting the tear film evaporate and drying the surface. Regular breaks and conscious blinking help, the 20-20-20 rule is a simple way to remember it.

There is no single best treatment, it depends on the type, cause, and severity. It may range from artificial tears and lifestyle changes to eyelid care, inflammation control, punctal plugs, or advanced in-clinic options. A proper assessment identifies the right approach.

Yes. Because a stable tear film is needed for clear sight, dry eye can cause blurred or fluctuating vision that usually clears when you blink. Treating the dry eye typically improves it.

Some evidence suggests omega-3 fatty acids may help certain people with dry eye, particularly the evaporative type. Discuss it with your eye specialist as part of an overall plan.