Dry eyes are usually caused by a mix of screen habits, environment, aging, certain medications, or contact lens wear, and most cases respond well to simple at-home changes. This guide breaks down the most common dry eye causes and relief strategies, from artificial tears and humidifiers to the 20-20-20 rule, plus signs it’s time to talk to an eye doctor.
By the third hour of back-to-back video calls, your eyes start to feel gritty, like there’s sand caught under your eyelids every time you blink. Maybe you’ve noticed it more in the morning too, waking up with eyes that feel raw or stuck shut. If you’ve been searching for the causes of dry eyes and ways to find relief, you’re far from alone: this condition is one of the most common complaints eye doctors hear. Anaheim Eye Institute has been helping Orange County patients sort out everyday eye concerns like this since 1958, and dry eye is one we see across every age group, from screen-heavy professionals to retirees.
The good news is that dry eyes are usually manageable once you understand what’s driving them. This article walks through the everyday and medical reasons your eyes might feel dry, plus realistic relief strategies you can start today.
What Actually Causes Dry Eyes
Quick take: Dry eyes happen when your tear film doesn’t stay stable, either because your eyes don’t produce enough tears or because your tears evaporate too quickly. Several everyday and medical factors can tip that balance.
Your tear film is more complex than most people realize. It has an oily outer layer that keeps moisture from evaporating too fast and a watery middle layer that nourishes the surface of the eye, so when either layer is disrupted, discomfort follows, as the National Eye Institute explains. According to the American Academy of Ophthalmology, most people with dry eye disease actually have the evaporative type, meaning their tears don’t last long enough, rather than not producing enough tears at all.
● Environmental exposure: wind, low humidity, air conditioning, or heating systems
● Extended screen time, which reduces how often you blink
● Aging, especially after age 50
● Hormonal changes, including menopause
● Certain medications, like antihistamines or some blood pressure drugs
● Contact lens wear
● Autoimmune conditions such as Sjögren’s syndrome
Is Screen Time Really Making It Worse
Quick take: Yes, extended screen use is one of the most common everyday contributors to dry, irritated eyes, mainly because we blink less while focused on a screen.
If you spend your workday staring at a monitor, you’re not imagining the connection. Research cited by eye care organizations shows people blink significantly less often when looking at digital devices, which allows the tear film to evaporate faster and leaves the eye surface feeling parched. This is often called digital eye strain, and dryness is one of its hallmark symptoms alongside fatigue and blurred vision.
● Blink rate drops noticeably during screen focus, especially reading or scrolling
● Screens held too close or too high can worsen strain
● Dry office or home air compounds the effect
● Symptoms often ease within a day or two of reduced screen time or added breaks
One widely recommended habit is the 20-20-20 rule: every 20 minutes, look at something roughly 20 feet away for at least 20 seconds. This simple pause gives your eyes a chance to relax and reset your blink rate, which naturally helps re-lubricate the surface.
A short screen break every 20 minutes can give tired, dry eyes a real chance to reset.
Environment and Aging: The Everyday Culprits
Quick take: Where you live, how you heat or cool your home, and simply getting older can all make your eyes more prone to dryness, even without any underlying eye disease.
Southern California’s dry, breezy climate isn’t always kind to sensitive eyes, and indoor air conditioning or heating can strip moisture from the air even further. On top of the environment, tear production naturally tends to decline with age, which is part of why dry eye symptoms become more common after 50.
● Common environmental triggers: low humidity, wind, smoke, air conditioning or heating vents pointed at your face
● Age-related changes: tear glands slow down, oil glands along the eyelid margin can become less efficient
● Hormonal shifts, particularly around menopause, can also affect tear quality
● Sleeping with a fan blowing directly on your face, or using a CPAP mask, can dry the eyes overnight
Medications, Contacts, and Other Hidden Contributors
Quick take: Certain medications and contact lens wear can quietly contribute to dry eye symptoms, even in people who otherwise have healthy eyes.
Many common prescriptions list dry eye as a possible side effect, including antihistamines, decongestants, some antidepressants, and certain blood pressure medications. Contact lenses can also disrupt the tear film simply by sitting on the eye’s surface for hours at a time, which is why some longtime contact wearers eventually find their lenses less comfortable than they once were.
● Medications commonly linked to dry eye: antihistamines, some antidepressants, certain blood pressure or hormone medications
● Contact lens habits that worsen dryness: overwear, sleeping in lenses, poor lens hygiene
● Switching to daily disposables or different lens materials sometimes helps
● If contacts feel consistently uncomfortable, it’s worth having your fit and prescription reassessed rather than pushing through
If dryness is making contacts hard to tolerate, our cornea specialists can evaluate the surface of your eye and talk through options, including whether a different lens type or a treatment plan might help.
When Dry Eye Points to Something More
Quick take: For most people, dry eye is a manageable, everyday nuisance, but in some cases it’s connected to an underlying autoimmune or inflammatory condition that benefits from medical evaluation.
Conditions like Sjögren’s syndrome affect the glands that produce moisture throughout the body, including the eyes, and tend to show up alongside dry mouth or joint discomfort. It’s far more common in women, particularly after age 40, and early evaluation matters because ongoing inflammation can affect the eye’s surface over time, according to the American Academy of Ophthalmology. The condition isn’t something to self-diagnose from symptoms alone, but it’s worth mentioning to your doctor if dryness comes with other unexplained symptoms.
● Signs it’s time to see a doctor: persistent dryness that doesn’t improve with over-the-counter drops
● Eye pain, redness, or sensitivity to light that doesn’t resolve
● Dry eyes paired with dry mouth or joint pain
● Blurred vision that comes and goes
● Any sudden change in vision, which always warrants prompt evaluation
Our retina and cornea teams work together to closely evaluate symptoms because chronic dryness and inflammation can occasionally affect deeper eye structures.
Most dry eye is manageable, but new or unusual symptoms are always worth mentioning to your doctor.
At-Home Relief Strategies Worth Trying
Quick take: Many people find meaningful relief from dry eyes through simple, consistent habits, without needing a prescription right away.
Before reaching for anything stronger, try the basics consistently for a couple of weeks, since small daily habits can make a difference. The AAO’s dry eye tips emphasize that consistency matters more than any single product.
● Use preservative-free artificial tears regularly, not just when eyes feel dry
● Run a humidifier at home, especially in bedrooms or heated/cooled rooms
● Practice the 20-20-20 rule during screen-heavy work
● Stay hydrated throughout the day
● Apply a warm compress to the eyelids to help oil glands function better
● Avoid pointing fans, vents, or hair dryers directly at your face
● Take breaks from contact lenses when eyes feel irritated
If eyelid inflammation or clogged oil glands are involved, our eyelid specialists can offer targeted treatments that go beyond what over-the-counter drops can provide.
Medical Treatment Options If Home Care Isn’t Enough
Quick take: When at-home relief isn’t enough, there are prescription and in-office treatments that can significantly improve comfort, and an eye doctor can help you find the right fit.
Prescription eye drops like cyclosporine or lifitegrast work differently than artificial tears: rather than just adding moisture, they target inflammation that may be interfering with natural tear production. For some patients, tiny punctal plugs can help keep natural tears on the eye’s surface longer. Your eye doctor may also look for underlying contributors, from eyelid gland issues to autoimmune conditions, before recommending next steps.
● Prescription anti-inflammatory drops for chronic dryness
● Punctal plugs to slow tear drainage
● In-office treatments for eyelid gland dysfunction
● Referral to a specialist if an autoimmune condition is suspected
● A personalized plan if you also wear contacts or are considering LASIK, since dry eye needs to be addressed beforehand for the best comfort during recovery
The Takeaway
Dry eyes are common, and for most people, they’re very manageable once the everyday triggers are addressed: screen habits, environment, aging, medications, or contact lens wear. A few consistent changes, like more frequent screen breaks, a humidifier, and regular artificial tears, resolve symptoms for many patients. But if dryness lingers, worsens, or comes with other symptoms, it’s worth getting a professional opinion rather than guessing.
Have questions about your vision or ready to explore your options? The team at Anaheim Eye Institute has been helping Orange County patients see clearly since 1958. Book an Appointment or call 714.533.2020.
FAQ
1. What are the most common causes of dry eyes? The most common causes include extended screen time, dry or windy environments, aging, certain medications like antihistamines, and contact lens wear. Autoimmune conditions can also play a role in some people. A full picture usually requires an eye exam, since several factors can overlap.
2. Can drinking more water help with dry eyes? Staying well hydrated supports overall tear production, but it’s usually only one part of the solution. Most people also need to address screen habits, environment, and possibly artificial tears for meaningful relief. If dryness persists despite adequate hydration, it’s worth discussing with an eye doctor.
3. How often should I use artificial tears? Preservative-free artificial tears can generally be used several times a day, and many people get the best results using them proactively rather than waiting for discomfort. Product instructions vary, so check the label or ask your eye doctor for a recommendation suited to your symptoms.
4. Are dry eyes a sign of a more serious condition? Usually not, but persistent or worsening dryness, especially alongside dry mouth, joint pain, or vision changes, can sometimes point to an underlying condition like Sjögren’s syndrome. This isn’t something to self-diagnose, so it’s best to bring these symptoms to your doctor for evaluation.
5. Can contact lenses cause permanent dry eye? Contact lenses can contribute to dry eye symptoms, particularly with overwear or poor hygiene, but the condition doesn’t necessarily mean permanent damage. Switching lens types, taking regular breaks, and improving lens care often help. An eye doctor can assess whether your current lenses are still the right fit.
This article is for general educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. If you’re experiencing persistent or worsening eye symptoms, please consult an eye care professional.
