Dry Eyes

What Causes Dry Eyes?

What Causes Dry Eyes?

Your tear film has three layers that work together to keep your eyes moist and healthy. When any of these layers becomes unstable, you can develop dry eye disease. The two main types are aqueous deficient dry eye, where your glands do not make enough watery tears, and evaporative dry eye, where tears evaporate too quickly because the oily layer is lacking.

Most people actually have a combination of both types. Our eye doctor will determine which type you have so we can tailor your treatment plan.

As you age, your tear glands naturally produce fewer tears. Many people notice dry eye symptoms starting in their fifties and sixties. Hormonal shifts play a major role, especially in women going through menopause or using hormone replacement therapy.

Pregnancy and birth control pills can also trigger temporary dry eye symptoms. These changes affect the quality and quantity of your tear film.

Many common medications list dry eyes as a side effect. Antihistamines and decongestants dry out mucous membranes throughout your body, including your eyes. Blood pressure medications, antidepressants, and anti-anxiety drugs can also reduce tear production.

  • Allergy medications that relieve sneezing and runny nose
  • Diuretics used to treat high blood pressure and heart conditions
  • Acne medications including isotretinoin
  • Sleep aids and certain pain relievers

Several health conditions affect your ability to make tears. Autoimmune diseases like rheumatoid arthritis, lupus, and Sjögren syndrome attack the glands that produce moisture. Thyroid disorders and diabetes can also interfere with normal tear production.

Skin conditions around your eyelids, such as rosacea and blepharitis, often occur alongside dry eyes. Allergic conjunctivitis can overlap with dry eye disease, especially when seasonal triggers and itching are present, though treatment approaches differ. Vitamin A deficiency, though rare in developed countries, can severely impact tear quality.

Eye surgery can temporarily or permanently reduce tear production. Cataract surgery and refractive procedures like LASIK or PRK may disrupt corneal nerves and decrease tear secretion. Contact lens wear is a well-known contributor, especially when lenses are worn too long or when lens solutions contain irritating preservatives.

Conditions that prevent complete eyelid closure expose the eye surface and accelerate tear evaporation. CPAP machines can leak air across the eyes during sleep. Lagophthalmos, facial nerve palsy, ectropion, and entropion all interfere with normal blinking and lid function. Diseases like Parkinson disease reduce blink frequency and quality, leading to chronic dryness.

Environmental and Lifestyle Risk Factors

Environmental and Lifestyle Risk Factors

Staring at screens can significantly reduce your blink rate. When you blink less often, your tears evaporate faster and your eyes do not get the moisture they need.

  • Computer work and gaming sessions often last hours without breaks
  • Smartphones and tablets position your eyes in a wide-open stare
  • Poor screen positioning can make you open your eyes wider than normal
  • Indoor office environments often have low humidity and air conditioning

Wind, smoke, and dry air pull moisture away from the surface of your eyes. Air conditioning and heating systems lower indoor humidity, creating environments where tears evaporate rapidly.

  • Ceiling fans and dashboard vents blowing directly on your face
  • High altitude and arid climates with low humidity
  • Cigarette smoke and secondhand smoke exposure
  • Dusty or polluted outdoor air
  • Airplane cabins with extremely low humidity levels

Signs and Symptoms of Dry Eyes

The most common complaint we hear is a scratchy or gritty feeling, as if sand or an eyelash is stuck in your eye. This sensation often gets worse as the day goes on, especially after hours of reading or screen use. You might also feel burning or stinging that makes you want to rub your eyes.

Rubbing provides temporary relief but usually makes inflammation worse over time. The discomfort can affect one eye or both eyes and may come and go throughout the day.

It seems strange, but excessive tearing is actually a very common symptom of dry eye disease. When your eyes feel irritated from dryness, they send a distress signal to your nervous system. Your body responds by flooding your eyes with watery tears to wash away the perceived threat.

These reflex tears are poor quality and lack the oily and mucus layers needed to stay on your eye. They run down your cheeks without providing lasting relief, leaving you stuck in a cycle of dryness and tearing.

Dry eyes can make your vision fluctuate, especially during activities that require focus. Reading, driving at night, and working on a computer become challenging when your vision blurs every few seconds. Blinking might temporarily clear your vision, only to have it blur again moments later.

  • Difficulty reading small print for extended periods
  • Increased sensitivity to bright lights and glare
  • Trouble wearing contact lenses comfortably
  • Feeling like your eyes are tired or heavy by midday

Most dry eye symptoms develop gradually and are not emergencies. However, certain signs require prompt attention from our eye doctor. Sudden vision loss, severe eye pain that does not improve with lubricating drops, or significant discharge with redness and photophobia could signal a more serious condition.

  • Sharp or stabbing pain rather than mild discomfort
  • Thick yellow or green discharge from your eyes
  • Painful red eye in a contact lens wearer
  • Halos around lights, nausea, or rapidly worsening vision
  • A sudden increase in light sensitivity with headache
  • Visible wounds or white spots on your cornea
  • Chemical splash: rinse immediately with water for at least fifteen minutes, then seek emergency care

How We Diagnose Dry Eye Disease

When you come in for a dry eye evaluation, we start by asking detailed questions about your symptoms, medical history, and medications. We will want to know when your symptoms are worst, what makes them better or worse, and how they affect your daily life. A thorough examination of your eyelids, tear film, and eye surface follows.

The exam is usually well tolerated; some tests can cause mild temporary irritation. The full evaluation typically takes about thirty to forty-five minutes. We may use special dyes and lights to see parts of your eye that are damaged or inflamed.

The Schirmer test measures how much tears your eyes produce by placing a small strip of paper under your lower eyelid for five minutes. We measure how much the paper becomes wet to determine if you are making enough tears. We also assess tear breakup time using fluorescein dye to see how stable your tear film is and whether dry spots appear on your cornea.

If your tears break up in less than ten seconds, it suggests poor tear quality and rapid evaporation. Many practices now use additional tests to give us a complete picture of your ocular surface health.

  • Symptom questionnaires such as OSDI or DEQ-5 to measure impact on daily life
  • Ocular surface staining with fluorescein and lissamine green to map damaged areas
  • Tear osmolarity testing and inflammatory marker analysis
  • Meibography imaging to evaluate oil gland structure and health

We carefully examine your eyelids for signs of inflammation, blocked oil glands, or improper closure. The meibomian glands in your eyelids produce the oily layer of your tears, and when these glands become clogged, evaporative dry eye results. We may gently press on your eyelids to see if the glands release clear oil or thick, cloudy secretions. This expression can be briefly uncomfortable but gives us important information.

Anterior blepharitis involves inflammation at the base of the lashes, while meibomian gland dysfunction affects the oil glands deeper in the lid. Identifying which type you have helps us choose the most effective treatment.

  • Looking for redness, swelling, or crusting along the lash line
  • Checking if your eyelids close completely when you blink
  • Evaluating the quantity and quality of oil from your glands
  • Assessing for signs of demodex mites or bacterial overgrowth

For complex or severe cases, we may use specialized imaging technology. These tools help us see the layers of your tear film, map areas of corneal damage, and evaluate your meibomian glands in detail. Imaging allows us to track changes over time and adjust your treatment as needed.

This technology is particularly useful when basic treatments have not provided relief or when we suspect an underlying condition. The images give us objective data to guide our recommendations.

Treatment Options for Dry Eyes

Treatment Options for Dry Eyes

Over-the-counter artificial tears are often the first treatment we recommend. These drops supplement your natural tears and provide temporary relief. Preservative-free formulas are best if you need to use drops more than four times a day, as preservatives can irritate your eyes with frequent use.

Different drops have different thicknesses and ingredients. Some people prefer gel drops for nighttime or thicker ointments before bed. We can help you choose the right product for your specific type of dry eye.

When over-the-counter drops are not enough, prescription medications can increase your natural tear production and reduce inflammation. Cyclosporine and lifitegrast eye drops work by calming inflammation on the surface of your eye, allowing your tear glands to function better. These medications typically take several weeks to reach full effectiveness. Mild burning or stinging when you first start is common, and regular follow-up visits help us ensure the treatment is working.

Additional prescription therapies are available for specific dry eye subtypes, including options that stimulate tear production through different pathways and formulations designed to target evaporative dry eye. We will discuss which approach fits your situation best.

  • Anti-inflammatory drops used once or twice daily
  • Short-term steroid drops in select cases, with close monitoring for pressure rise and infection risk
  • Autologous serum eye drops made from your own blood in select cases, requiring refrigeration and careful handling to reduce contamination risk
  • Oral antibiotics for cases linked to rosacea or meibomian gland dysfunction, with attention to possible photosensitivity and stomach upset

Punctal plugs are tiny devices we insert into the drainage holes in your eyelids to keep tears on your eye longer. By blocking tear drainage, your natural tears and artificial tear supplements stay on the surface of your eye instead of draining away. The procedure is typically quick and well tolerated.

We usually start with temporary plugs that dissolve after a few months. If you notice improvement, we may recommend permanent silicone plugs that can be removed if needed. Possible side effects include tearing, a feeling of something in the eye, plug loss, and rarely irritation or infection. We generally prefer to control active inflammation before placing plugs to optimize comfort and results.

Blepharitis and meibomian gland dysfunction are major contributors to evaporative dry eye. We may recommend in-office treatments to clean your eyelids thoroughly and open blocked oil glands. Intense pulsed light therapy and thermal pulsation devices heat and massage your glands to restore proper oil flow. Not all patients are candidates for these treatments, multiple sessions are often needed, and individual response varies.

Manual expression of the glands, combined with at-home warm compresses and lid scrubs, can significantly improve tear quality. Treating the root cause often provides longer-lasting relief than drops alone.

For severe dry eye that does not respond to standard treatments, we may consider additional options. Scleral contact lenses vault over your cornea and hold a reservoir of fluid against your eye, providing constant hydration. Moisture chamber glasses create a humid environment around your eyes to slow evaporation.

  • Amniotic membrane therapy to heal severe corneal damage
  • Specialty contact lenses designed for dry eye patients
  • Moisture goggles worn at night or eyelid taping strategies for exposure-related dryness
  • Surgical options to improve eyelid position or closure in select cases

Omega-3 fatty acids from fish oil or flaxseed oil may help reduce inflammation and improve the oily layer of your tears. While research results are mixed, many patients report symptom improvement when taking high-quality omega-3 supplements daily. Dosing varies by individual needs; discuss supplementation with our eye doctor or your primary care provider, especially if you take blood thinners, have a bleeding disorder, or are planning surgery.

Other nutrients like vitamin D and vitamin A also support eye health through a balanced diet. Avoid vitamin A supplementation unless specifically recommended by your doctor, as excess vitamin A can be harmful. A diet rich in leafy greens, fatty fish, and nuts provides the building blocks your body needs to maintain healthy tears.

Self-Care and Home Remedies for Dry Eyes

Simple changes to your surroundings can make a big difference. Using a humidifier in your bedroom or office adds moisture to the air and slows tear evaporation. Position air vents away from your face and avoid sitting directly under fans or heaters.

  • Keep indoor humidity between thirty and fifty percent
  • Wear wraparound sunglasses outdoors on windy days
  • Avoid smoke and stay away from smokers when possible
  • Take breaks from air conditioning when you can open windows

The 20-20-20 rule helps combat digital eye strain and dry eyes. Every twenty minutes, look at something twenty feet away for at least twenty seconds. This practice encourages you to blink fully and gives your eyes a break from intense focus. Position your screen slightly below eye level so your upper eyelid covers more of your eye.

Adjust screen brightness to match your surroundings and increase text size to reduce squinting. Remember to blink deliberately and completely several times during each break.

Daily eyelid cleaning removes debris and bacteria that can worsen dry eyes. Use a clean, warm washcloth or specialized eyelid wipes to gently scrub along your lash line each morning and night. Warm compresses applied for five to ten minutes help melt the oil in your meibomian glands so it flows more easily.

After applying a warm compress, gently massage your eyelids in a downward motion on the upper lid and upward on the lower lid. This technique helps express the oil glands and improve tear quality.

Wearing sunglasses is not just for bright days. Quality sunglasses with wraparound frames shield your eyes from wind and reduce tear evaporation. Look for glasses that block both UVA and UVB rays to protect your eyes from sun damage that can worsen dryness over time.

  • Wraparound or close-fitting frames that block wind from the sides
  • Polarized lenses to reduce glare and light sensitivity
  • Moisture chamber glasses for especially windy or dry environments

Dry eye disease is often a chronic condition that requires ongoing management. After starting treatment, we will schedule follow-up appointments to monitor your progress and adjust your care plan as needed. Most people begin to feel better within a few weeks, but full improvement may take several months.

Keep track of your symptoms in a journal so we can identify patterns and triggers together. Do not stop or change prescribed treatments without guidance. Some medications, especially steroid drops, may need tapering under our supervision. Maintenance therapy helps keep your eyes comfortable long term.

Frequently Asked Questions

In most cases, dry eye disease causes discomfort but does not lead to permanent vision loss. However, severe untreated dry eye can damage the surface of your cornea and lead to scarring or infections that might affect vision. Regular care and treatment protect your eyes from these rare complications.

Price does not always reflect effectiveness. Many affordable preservative-free artificial tears work just as well as premium brands. The key is finding a formula that matches your specific type of dry eye and using it consistently. We can guide you toward cost-effective options that meet your needs.

You might notice improvement from artificial tears within minutes, but their effect is temporary. Prescription medications and procedural treatments usually take four to twelve weeks to show full benefits because they work by reducing inflammation and restoring normal gland function. Patience and consistent use are essential for success.

Many people with mild dry eyes can still wear contacts comfortably with the right lens type and care routine. Daily disposable lenses often work better than monthly lenses because fresh lenses have fewer deposits. Some contact lens materials are specifically designed for dry eyes. If standard contacts are uncomfortable, specialty lenses like scleral lenses might be an option.

Sjögren syndrome is an autoimmune disease that causes dry eyes and dry mouth as its main symptoms. While everyone with Sjögren syndrome has dry eyes, most people with dry eyes do not have Sjögren syndrome. If we suspect an autoimmune condition based on your symptoms and exam, we may recommend blood tests or refer you to a rheumatologist.

Some cases of dry eye improve completely, especially those triggered by temporary factors like medication changes or short-term environmental exposure. Chronic dry eye linked to aging, hormones, or medical conditions typically requires ongoing management. With proper treatment, most patients can achieve comfortable, functional vision even if complete resolution is not always possible.

Getting Help for Dry Eyes

Getting Help for Dry Eyes

If you are experiencing symptoms of dry eyes, our eye doctor can evaluate your condition and develop a personalized treatment plan. Early intervention helps prevent complications and gets you back to comfortable vision faster. We are here to help you understand your options and find relief from dry eye disease.