Chronic dry eye: why your eyes burn and what to do

In short: Dry eye is a real condition, with several subtypes, and each one needs a different treatment, not “tiredness.” The artificial tears from the drugstore usually treat the wrong subtype, which is why they fall short.

Your eyes burn by the end of the day. Screen light bothers you. It feels like there’s sand in there. You’ve tried drugstore artificial tears and sometimes they help, sometimes they don’t. You live with it because you assume it’s “normal tiredness,” or because someone told you your prescription is fine so there’s nothing to do. That’s chronic dry eye, and it’s almost always treatable, just not with the first bottle you grab off the shelf.

Dr. Emmanuel Bolaños Betancourt: ophthalmic surgeon with advanced fellowship training in cornea, refractive surgery and cataract microsurgery. I see patients at Hospital Aranda de la Parra Puerto Interior (20 minutes from León) and at Oftalmo-Visión Clínica Oftalmológica in downtown Silao. Board certified by the Consejo Mexicano de Oftalmología since 2013. Over 15 years in clinical practice. 292 combined Google reviews with a 4.9 average.

What almost nobody explains about dry eye

The term “dry eye” covers at least three distinct conditions that look similar but respond to different treatments. That’s why one drop works and another doesn’t, even when both promise the same thing on the label.

• Evaporative dry eye: tears evaporate too fast, usually because the meibomian glands (along the eyelid edge) aren’t producing enough of the lipid layer. It’s the most common type and the one most linked to prolonged screen use.
• Aqueous-deficient dry eye: the eye doesn’t produce enough tears. More common with age, in women after menopause, and in patients with autoimmune conditions like Sjögren’s syndrome.
• Mixed dry eye: a combination of both. It’s the hardest to manage and usually needs a multimodal treatment approach.

Figuring out which one you have isn’t done through questions alone. It takes specific tests of the eye’s surface. A Schirmer test measures tear production. Meibography evaluates the state of the meibomian glands. Tear breakup time (TBUT) shows how the tear film behaves on the cornea.

That’s the background. The practical consequence is why drugstore tears only work halfway, and sometimes not even that.

Why artificial tears usually fall short

Artificial tears do one thing: replace tear volume for a few minutes. If your problem is that your meibomian glands are clogged, that replacement is like pouring water into an engine that’s out of oil. It helps a little, doesn’t last, and the underlying cause stays the same.

Not all artificial tears are equal, either. Ones with preservatives (like benzalkonium chloride) can make dry eye worse if used more than three or four times a day. Preservative-free options are gentler. Ones with hyaluronic acid hold on the surface longer. Ones with lipids help with evaporative cases. Choosing well means knowing which type of dry eye you have.

If tears alone don’t solve it, the next step is going after the real cause. And there are more tools for that than most patients realize.

Treatments that target what’s actually happening

Depending on the type, treatment options include:

• Daily eyelid hygiene: warm compresses, eyelid massage, cleaning with specific products. It sounds basic, but done properly it resolves most evaporative cases.
• Omega-3 supplements: good evidence for improving the lipid quality of tears. Dose and source matter.
• Topical cyclosporine (Restasis or equivalents): reduces inflammation of the tear gland in moderate to severe aqueous-deficient dry eye.
• Short pulses of topical steroids: for inflammatory flares. Used under close supervision because of the risk to intraocular pressure.
• Punctal plugs: small devices that close the tear drainage duct to conserve your own tears. Reversible, an elegant option for select cases.
• In-office treatments: intense pulsed light for meibomian gland dysfunction, manual gland expression, controlled heat.

The clinical side is half the work. You handle the other half, and it doesn’t even need a prescription.

What changes the picture from your own kitchen table

• The 20-20-20 rule for screens: every 20 minutes, look at something 20 feet away for 20 seconds. It restores your natural blink rhythm.
• A humidifier in the room: dry air evaporates tears faster. In the Bajío climate, a humidifier makes a real difference.
• UV sunglasses outdoors: wind and sun exposure dehydrate the eye’s surface.
• Staying hydrated: drink enough water. It sounds obvious, and almost nobody does it.
• Avoiding fans or air conditioning blowing directly on your face.

By now you’ve seen what dry eye is, why drugstore tears fail, what treatments actually work, and what to change at home. What’s left is the most important part. Sometimes dry eye is a clue that something else is going on, and mistaking it for the whole picture costs time and vision.

When dry eye isn’t dry eye

Persistent dry eye can be a symptom of systemic conditions that aren’t visible in the eye itself. Sjögren’s syndrome (autoimmune), rheumatoid arthritis, lupus, thyroid disease, menopause, and certain medications like antihistamines, antidepressants or blood pressure medications. During your evaluation, I look at the full picture, not just the eye in isolation, because sometimes the underlying diagnosis changes the treatment.

Last updated: June 4, 2026 · Reviewed by Dr. Emmanuel Bolaños, ophthalmic surgeon (Mexican Board of Ophthalmology, member 3045).