Eye Dryness Causes: Why Your Eyes Feel Dry, Irritated and Uncomfortable

Eye dryness is a common complaint across all age groups, especially among people who spend long hours on digital devices. Many individuals experience burning, irritation or a gritty sensation without understanding the underlying reasons. Identifying eye dryness causes is essential to prevent discomfort and protect long-term eye health.

In India, increasing screen exposure, air-conditioned environments and rising pollution levels have contributed to a growing burden of dry eye symptoms.

What Is Eye Dryness?

Eye dryness occurs when tears are unable to adequately lubricate the surface of the eyes.

This can happen due to:

• insufficient tear production

• poor tear quality

• excessive tear evaporation

Healthy tears are essential for:

• clear vision

• protection from infection

• comfort during blinking

Tear Film and Eye Lubrication

The tear film has three layers:

• oily layer to prevent evaporation

• watery layer for moisture

• mucous layer to spread tears evenly

Disruption in any layer leads to dryness.

Common Eye Dryness Causes

Prolonged Screen Time

Digital screens reduce blink rate.

This causes:

• faster tear evaporation

• incomplete blinking

• surface irritation

ICMR occupational health studies link screen exposure to rising dry eye complaints.

Air Conditioning and Dry Environments

AC and heaters reduce indoor humidity.

Dry air:

• accelerates tear evaporation

• worsens eye irritation

Office workers are especially affected.

Aging

Tear production decreases with age.

Older adults often experience:

• chronic dryness

• burning sensation

• sensitivity to light

WHO reports aging as a major risk factor for dry eye syndrome.

Environmental Pollution

Dust, smoke and pollutants irritate the eyes.

Urban air pollution:

• inflames the eye surface

• destabilizes tear film

India’s rising pollution levels contribute significantly to eye discomfort.

Contact Lens Use

Contact lenses absorb tear moisture.

Extended use:

• worsens dryness

• increases irritation

• reduces oxygen supply to eyes

Improper lens hygiene increases risk further.

Medical Conditions Linked to Eye Dryness

Hormonal Changes

Hormonal fluctuations during:

• menopause

• pregnancy

• thyroid disorders

can reduce tear production.

Autoimmune Disorders

Conditions like rheumatoid arthritis and Sjögren’s syndrome affect tear glands.

These cause severe and chronic dryness.

Diabetes

Diabetes affects nerve function and tear secretion.

NFHS-5 data links diabetes with higher prevalence of dry eye symptoms.

Medications That Cause Dry Eyes

Certain medicines reduce tear production, including:

• antihistamines

• antidepressants

• blood pressure medications

• acne treatments

Medication-related dryness should be medically reviewed.

Lifestyle Factors That Worsen Dry Eyes

Habits contributing to dryness include:

• poor hydration

• excessive caffeine intake

• smoking

• inadequate sleep

Lifestyle correction is key to symptom relief.

Symptoms Associated with Eye Dryness

Common symptoms include:

• burning or stinging sensation

• redness

• gritty feeling

• blurred vision

• excessive tearing (reflex tears)

Symptoms often worsen by evening.

Why Excessive Tearing Can Indicate Dry Eyes

Paradoxically, dry eyes may cause watering.

Irritation triggers reflex tears, but these:

• lack proper oil content

• do not lubricate effectively

This leads to ongoing discomfort.

Seasonal Influence on Eye Dryness

Dry eye symptoms often worsen:

• in winter due to low humidity

• in summer due to AC use

Seasonal care adjustments help manage symptoms.

How Eye Dryness Is Diagnosed

Diagnosis may include:

• tear production tests

• tear breakup time

• surface examination

Early diagnosis prevents surface damage.

Preventive Measures for Eye Dryness

Effective strategies include:

• following the 20-20-20 rule

• blinking consciously during screen use

• maintaining indo