If your eyes feel gritty, tired, or watery after a long day, you’re not alone. Dry eye is one of the most common issues we see in our clinics, and many people don’t realize what’s causing it.
You might notice burning while driving at night, trouble focusing on screens, or eyes that feel worse as the day goes on. If that sounds familiar, there’s usually an underlying reason-not just “tired eyes.”
Here are 10 common (and often overlooked) causes of dry eye and what may be contributing to your symptoms.
Why Dry Eyes Happen in the First Place
Your eyes stay comfortable thanks to a tear film, a thin layer of moisture that keeps the surface of your eyes smooth and clear.
When that balance is disrupted, you may experience dryness, irritation, or fluctuating vision.
Dry eye typically comes down to two main causes:
- Not producing enough tears
- Tears evaporating too quickly
1. Too Much Screen Time
Between work, school, and daily screen use, your eyes are working harder than ever.
When you look at a screen, you tend to blink less often. Blinking helps spread moisture across the eye, so when it decreases, dryness can develop more quickly.
You may notice:
- Burning or stinging eyes
- Headaches after screen use
- Blurry vision later in the day
2. Air Conditioning, Fans, and Indoor Air
Constant airflow can dry out your tear film.
Air vents, ceiling fans, and even car airflow directed toward your face can make symptoms worse.
Simple adjustment: Redirect airflow or consider using a humidifier at home.
3. Aging (Especially After 40)
As you get older, tear production naturally decreases.
Dry eye becomes more common with age and may gradually worsen without treatment.
4. Hormonal Changes
Hormonal shifts can affect tear production and eye comfort.
This is especially common during:
- Pregnancy
- Menopause
- Hormonal medication use
5. Medications
Some commonly used medications can contribute to dry eye symptoms.
These include:
- Antihistamines (allergy medications)
- Antidepressants
- Acne treatments
- Blood pressure medications
If your symptoms started after a medication change, it’s worth discussing during your exam.
6. Contact Lenses
Contact lenses sit directly on the surface of the eye and can affect how tears are distributed.
Over time, this may lead to dryness or irritation—especially later in the day.
7. Blocked Oil Glands
Along your eyelids are small oil glands that help prevent your tears from evaporating too quickly.
When these glands become blocked, your tears can dry out faster, leading to irritation.
Common signs include:
- Gritty sensation
- Red or irritated eyelids
- Crusting along the lashes
8. Diet and Hydration
Your overall health plays a role in eye comfort.
Low intake of certain nutrients, like omega-3 fatty acids or vitamin A, may affect tear quality.
Staying hydrated also supports healthy tear production.
9. Environmental Irritants
Exposure to dust, smoke, or pollution can irritate the eyes and contribute to dryness.
If your symptoms worsen outdoors or after commuting, your environment may be a factor.
10. Eyelid Hygiene
This is something many people don’t realize.
Oil buildup, debris, or bacteria along the eyelids can interfere with normal tear function and contribute to irritation.
Keeping your eyelids clean can help improve comfort.
When Dry Eyes Start Affecting Your Daily Life
Dry eye can go beyond occasional discomfort and begin to interfere with everyday activities.
You might notice:
- Trouble focusing at work
- Difficulty driving at night
- Reduced comfort with contact lenses
- Frequent use of eye drops without lasting relief
If symptoms persist, it’s important to identify the underlying cause.
What You Can Do to Find Relief
There are simple steps that can help improve symptoms:
- Take regular breaks from screens (20-20-20 rule)
- Stay well hydrated
- Use warm compresses for your eyelids
- Limit contact lens wear when symptoms are worse
- Adjust airflow in your environment
These changes can help, but they don’t always address the root cause.
How We Help
We take time to understand what’s actually causing your symptoms, so you’re not left guessing or relying on temporary fixes.
Dry eye can have multiple contributing factors, and treatment is most effective when it’s tailored to your specific needs.
Ready for Relief?
If your eyes feel tired, irritated, or just not quite right, it’s worth getting them checked. Dry eye symptoms often have an underlying cause-and the right treatment can make a meaningful difference.
Schedule your eye exam today, and let’s find a solution that helps you see and feel better every day.
FAQs About Dry Eyes
Can dry eyes cause blurry vision?
Yes. When the tear film is unstable, vision can fluctuate, especially during reading or screen use.
Are dry eyes permanent?
Not always. Many cases improve with proper diagnosis and treatment.
Do eye drops fix dry eye?
They can provide temporary relief but may not address the underlying cause.
Can kids get dry eyes?
Yes, especially with increased screen use.
When should I see an eye doctor?
If symptoms persist or keep returning, it’s time to schedule an exam.