Dry eye happens when your tears can’t keep the surface of your eye properly lubricated. The causes fall into two broad groups: your eyes don’t make enough tears, or they make tears that evaporate too fast. Hormones, screen time, aging, medications, and everyday environments can all push you toward one or both problems — and often several are working at once.
Tears are not just water. They have three layers — an oily outer layer, a watery middle layer, and a mucus layer that helps tears stick to the eye. A problem with any layer can cause dryness, even if your eyes water constantly.
What Causes Dry Eye From Hormones To Screen Time?
Hormones and screens cause dry eye through two different mechanisms. Hormones change how much and what kind of tears your glands produce. Screens change how often you blink and how completely you blink. Both can leave the eye surface exposed and irritated, and many people have both things going on.
Hormones affect the glands that make tears. Androgens, estrogen, and progesterone all appear to influence the meibomian glands — the small glands in your eyelids that release the oil that coats your tears. When those glands don’t work well, tears evaporate too quickly. That is why dry eye is common during menopause and why it can shift with pregnancy or hormone therapy.
Screen use is simpler to explain. When you look at a screen, you blink less often, and the blinks you do take are often incomplete. A partial blink doesn’t spread tears evenly across the eye. The result is a dry patch on the surface that your eye then tries to fix by watering — which is why some people with dry eye describe tearing, not just dryness.
How Do Hormones Cause Dry Eye?
The clearest hormonal link is with sex hormones and the oil-producing glands in the eyelids. These glands have hormone receptors, and when hormone levels change, the glands can produce less oil or oil of poorer quality. Less oil means tears evaporate faster between blinks.
Menopause is the most studied example. Dry eye is more common in women than men at every age, and the gap widens after menopause. Research has consistently linked low androgen levels to meibomian gland problems, though the exact relationship is still being worked out. Estrogen’s role is less clear and may be more complicated than once assumed.
Pregnancy and breastfeeding bring large hormone shifts too. Some women notice dry eye during pregnancy; others notice it after giving birth or while breastfeeding. The evidence here is thinner than for menopause, so it’s fair to say this is commonly reported but not as well studied.
Thyroid disease is another hormonal cause. Both an overactive and an underactive thyroid have been associated with dry eye, and thyroid eye disease — an autoimmune condition — can cause prominent eye dryness and irritation. If dry eye appears alongside other symptoms like fatigue, weight change, or a visible change in your eyes, that’s worth raising with a doctor.
How Does Screen Time Cause Dry Eye?
Screen use reduces blink rate and blink quality. Normal blinking happens roughly 15 to 20 times a minute. During focused screen work, that rate can drop substantially, and many of the blinks are incomplete — the upper lid doesn’t fully meet the lower lid. Incomplete blinks leave the lower part of the eye surface exposed and dry.
Two other factors make screens worse. Screens are usually positioned so you’re looking slightly up or straight ahead, which opens the eye wider and increases the exposed surface area. And people tend to hold screens closer than they’d hold a book, which increases the focusing effort and further reduces blinking.
This is why dry eye symptoms often build through the day and peak in the evening. It’s also why some people notice symptoms mostly at work and not on weekends.
What Else Causes Dry Eye?
Age is one of the strongest risk factors. Tear production tends to decline with age, and the meibomian glands become less effective over time. Most people with dry eye are over 50, though it can happen at any age.
Medications are a common and often overlooked cause. Antihistamines, decongestants, some antidepressants, diuretics, beta blockers, and isotretinoin (used for severe acne) can all reduce tear production or change tear composition. If dry eye started around the same time as a new medication, that timing is worth mentioning to your doctor.
Several medical conditions are linked to dry eye:
- Sjögren’s syndrome — an autoimmune condition that attacks moisture-producing glands, including tear and saliva glands.
- Rheumatoid arthritis and other autoimmune diseases — associated with dry eye through immune system effects on the lacrimal glands.
- Diabetes — associated with reduced tear production and changes to the eye surface.
- Blepharitis and meibomian gland dysfunction — inflammation or blockage of the eyelid glands, the most common cause of evaporative dry eye.
- Rosacea — frequently involves the eyes as well as the skin.
- Refractive eye surgery — dry eye is common for a period after LASIK and similar procedures, usually improving over months.
Environment matters too. Air conditioning, heating, wind, low humidity, smoke, and high altitude all increase tear evaporation. Contact lens wear is another factor — lenses can absorb tears and reduce the amount reaching the eye surface.
Why Does Dry Eye Sometimes Make Your Eyes Water?
Watery eyes are a normal response to dryness, not a contradiction. When the eye surface becomes irritated, the lacrimal gland releases a flood of tears. These reflex tears are mostly water and lack the oil and mucus that make tears stay on the eye, so they don’t fix the dryness. They may even wash away what little oil was there.
This is one of the most misunderstood parts of dry eye. People who describe their eyes as constantly watering often assume dryness can’t be the problem. In reality, tearing is one of the most common signs of dry eye.
What Are the Symptoms of Dry Eye?
Symptoms go beyond a dry feeling. Common ones include stinging or burning, a gritty or sandy sensation, redness, sensitivity to light, blurred vision that clears with blinking, a feeling that something is in your eye, and difficulty wearing contact lenses.
Some people notice symptoms most when reading, driving at night, or using a computer. Others notice them in air-conditioned rooms or in windy weather. Symptoms that are worse in the evening suggest evaporative dry eye, since the tear film has had all day to break down.
One important note: symptoms and eye damage don’t always match. Some people have significant dry eye on examination with only mild symptoms, and others have severe symptoms with little visible damage. That’s why an eye exam matters more than symptom severity alone.
How Is Dry Eye Treated?
Treatment depends on which part of the tear film is failing, which is why an eye exam is the sensible starting point. A doctor can check tear production, tear breakup time, and the health of your meibomian glands.
Artificial tears are the most common first step. Preservative-free versions are generally recommended for frequent use, since preservatives in multi-dose bottles can irritate eyes used more than a few times a day. Ointments and gels last longer and are often used at bedtime.
For evaporative dry eye caused by meibomian gland problems, warm compresses and eyelid hygiene are standard recommendations. Some clinicians also recommend eyelid massage or specific eyelid-cleaning products. For inflammation, some eye doctors prescribe short courses of topical steroids or other anti-inflammatory drops. For more persistent cases, punctal plugs — tiny inserts that block tear drainage — are an option.
Lifestyle steps matter too. Taking regular breaks during screen work, using a humidifier, avoiding direct air from fans and vents, and wearing sunglasses outdoors all reduce tear evaporation. The 20-20-20 rule — every 20 minutes, look at something 20 feet away for 20 seconds — is widely recommended for screen-related eye strain, though the evidence for its effect specifically on dry eye is limited.
If dry eye is linked to a medication, don’t stop the medication on your own. Talk to the prescribing doctor about alternatives.
When Should You See a Doctor?
See an eye doctor if symptoms last more than a few weeks, keep coming back, or interfere with daily activities. Also see one if you have eye pain, significant redness, sensitivity to light, or vision changes — these can point to conditions other than simple dry eye.
See a doctor promptly if you have sudden severe eye pain, a sudden change in vision, or a feeling that something is stuck in your eye that doesn’t wash out. Those are not typical dry eye symptoms and need urgent evaluation.
If dry eye comes with dry mouth, joint pain, fatigue, or unexplained rashes, mention those symptoms to your doctor. Together they can point to an underlying condition worth investigating.
Frequently Asked Questions
Does menopause cause dry eye?
Yes, dry eye is more common after menopause, largely because hormone changes affect the oil-producing glands in the eyelids. Women are more likely than men to have dry eye at every age, and the gap widens after menopause.
Can too much screen time cause dry eye?
Yes. Screen use reduces how often you blink and how completely you blink, which lets tears evaporate between blinks. Symptoms often build through the day and are worst in the evening.
Why do my eyes water if they are dry?
Irritation from dryness triggers a reflex release of tears that are mostly water and don’t stay on the eye. This is a common sign of dry eye, not a sign that your eyes are producing enough tears.
Can dry eye go away on its own?
Mild cases caused by a temporary factor like a new medication or a dry environment often improve when that factor changes. Dry eye linked to age, hormones, or meibomian gland problems usually needs ongoing management rather than resolving on its own.
