Eye health resource
Can Allergies Cause Dry Eyes?
Eye allergies and dry eye can overlap. Allergic inflammation, eye rubbing, environmental exposure, and some antihistamines may worsen dryness even when allergy is not the only cause.
Reviewed for accuracy by Justin Bazan, OD on .
Eye allergies and dry eye can overlap, but they are not the same condition. Allergic conjunctivitis often causes itching, redness, watering, and eyelid swelling. Dry eye more often causes burning, grittiness, fluctuating vision, or a feeling that something is in the eye. Many patients experience features of both at the same time.
Allergic inflammation can make the ocular surface less comfortable, frequent eye rubbing can add irritation, and some allergy medicines — particularly certain oral antihistamines — can reduce tear production or worsen dryness in susceptible people.
How Can You Tell Allergy From Dry Eye?
Symptoms overlap enough that self-diagnosis is not always reliable. A few patterns can be helpful:
- Itching is especially characteristic of eye allergy.
- Burning, grittiness, and fluctuating blur are common with dry eye.
- Watery eyes can occur with either condition.
- Redness and light sensitivity are nonspecific and can occur with allergy, dry eye, infection, contact-lens problems, and other eye conditions.
If symptoms are severe, one-sided, painful, associated with discharge, or accompanied by a meaningful vision change, do not assume they are ordinary seasonal allergies.
Why Can Allergies Make Dryness Feel Worse?
Allergens such as pollen, dust, mold, or animal dander can trigger inflammation on the surface of the eye. Rubbing itchy eyes can further irritate the eyelids and ocular surface.
At the same time, seasonal conditions that trigger allergies may also be windy or dry. That means environmental tear evaporation and allergic inflammation can happen together.
Can Allergy Medicine Cause Dry Eyes?
Some medicines used for allergy symptoms can contribute to dry eye. Oral antihistamines are a common example because they can reduce secretions, including tear production, in some people.
Do not stop a prescribed or medically important medication solely because your eyes feel dry. If you suspect a medication is contributing, discuss it with the clinician who manages that medication and tell your eye doctor what you take.
What Can Help With Eye Allergies?
Reducing exposure to a known trigger can help. Depending on the allergen, practical steps may include keeping windows closed during high-pollen periods, washing your hands and face after outdoor exposure, avoiding eye rubbing, and using sunglasses outdoors as a partial barrier against wind and airborne particles.
Cold compresses and appropriate lubricating drops may reduce discomfort. Allergy-specific eye drops are different from ordinary artificial tears and should be chosen based on your symptoms and health history.
What Can Help With Dry Eye?
Dry-eye treatment depends on the cause and severity. Current Park Slope Eye dry-eye care may include over-the-counter artificial tears, lid-hygiene cleansers, prescription eye drops, and punctal plugs when appropriate, along with individualized environmental or behavioral recommendations.
Preservative-free artificial tears can be useful for patients who use drops frequently or are sensitive to preservatives, but “preservative-free” is not automatically required for every patient or every allergy drop.
What If I Wear Contact Lenses?
Allergy season can make contact-lens wear more difficult. Deposits, eye rubbing, ocular-surface inflammation, lens material, and wearing time may all contribute.
If your contacts become uncomfortable during allergy season, do not simply continue wearing a painful or very red lens. Remove the lens and have the eye evaluated when symptoms are significant or persistent.
When an Eye Exam Helps
An eye exam can look at the eyelids, conjunctiva, tear film, cornea, contact lenses, and other findings to help distinguish dry eye, allergic conjunctivitis, infection, blepharitis, medication effects, and other causes of irritation.
Park Slope Eye provides both dry-eye care and medical eye care for appropriate eye-health conditions. If allergy-season symptoms are interfering with your comfort or vision, book an appointment.
Originally published . Substantially updated .