Dry eye syndrome affects millions of adults and has become more common in the era of screens, contact lenses, and air-conditioned environments. Far from a minor irritation, untreated dry eye can damage the ocular surface and impair vision.

Two Main Causes

Dry eye stems from either insufficient tear production or excessive tear evaporation. Most patients have some combination of both. Identifying the dominant cause shapes effective treatment.

Evaporative Dry Eye

The most common form is linked to dysfunction of the meibomian glands lining the eyelids. These glands produce the oily layer that prevents tears from evaporating too quickly. When they clog or atrophy, tears evaporate faster than they can be replaced.

Aqueous Deficient Dry Eye

Less commonly, the lacrimal glands fail to produce enough watery component. This pattern is associated with aging, autoimmune conditions like Sjogren’s syndrome, and certain medications.

Common Triggers

Prolonged screen use reduces blink rate dramatically. Dry indoor air, wind, smoke, antihistamines, and certain blood pressure medications all worsen symptoms. Hormonal changes around menopause are another factor.

Treatment Approaches

Artificial tears remain the foundation, with thicker gels or ointments for nighttime. Warm compresses and eyelid hygiene address meibomian gland issues. Prescription drops can reduce inflammation, and procedures like LipiFlow or intense pulsed light treat gland dysfunction.

Lifestyle Matters

The 20-20-20 rule helps with screen-related dryness: every 20 minutes look at something 20 feet away for 20 seconds. Humidifiers, omega-3 supplementation, and adequate hydration all support tear film health. For thorough patient information, the American Academy of Ophthalmology is a strong reference.