Dry Eyes: Causes, Best Eye Drops, and Relief Tips (A Pharmacist’s Guide)
Dry, irritated eyes are one of the most common concerns people ask me about in the pharmacy — and it affects far more than just older adults. With long screen hours, contact lens use, dry indoor air, and busy lifestyles, dry eyes are now extremely common at all ages, including students, office workers, and people who spend much of their day on digital devices.
Symptoms are often described as a gritty, sandy, burning, or tired feeling, even though the eyes may still water. This can be confusing and frustrating, especially when people assume watery eyes mean their eyes aren’t dry. In reality, watery eyes can be a sign that the eyes are trying to compensate for poor-quality tears that evaporate too quickly or fail to coat the eye evenly.
The good news is that most cases of dry eye can be managed very effectively with the right over-the-counter products and a few practical habit changes. In this pharmacist-written guide, we’ll go over common causes of dry eyes, how to choose the best eye drops for your situation, helpful non-medication strategies, and when it’s important to seek professional care so more serious eye conditions aren’t missed or delayed.
🗨️ Friendly Note from Your Pharmacist:
Some of the links below are Amazon affiliate links. If you click them and make a purchase, I earn a small commission (at no extra cost to you). As always — I only recommend products I believe are genuinely useful and safe for everyday health. Thank you for your support!
👀 What Causes Dry Eyes?
Dry eyes occur when your tears don’t adequately lubricate and protect the surface of your eyes. Healthy tears are made up of three layers — oil, water, and mucus — and each layer plays an important role in keeping the eyes comfortable, clear, and protected from irritation. When one layer is disrupted, the entire tear film becomes unstable and less effective.
In many cases, dry eye symptoms aren’t caused by a lack of tears, but by poor tear quality. Tears may evaporate too quickly or fail to spread evenly across the eye, leaving dry spots that can cause irritation, redness, and fluctuating blurry vision throughout the day.
Common contributing factors include:
- Prolonged screen use, which reduces blinking and increases tear evaporation
- Dry indoor air from heating or air conditioning
- Aging and hormonal changes, which can reduce tear production and oil gland function
- Contact lens use, especially with long wear times
- Medications, such as antihistamines, antidepressants, isotretinoin, and decongestants
- Eyelid inflammation, including blepharitis or meibomian gland dysfunction
Often, more than one factor is involved at the same time. This is why dry eye treatment usually works best when approached from several angles rather than relying on a single product or strategy.
First-Line Treatment: Lubricating Eye Drops (Artificial Tears)💧
For most people, lubricating eye drops — also called artificial tears — are the first treatment to try. These products help stabilize the tear film, reduce friction between the eyelid and the eye, and protect the eye’s surface from irritation caused by dryness and frequent blinking.
Artificial tears work best when used consistently, rather than only when symptoms become severe. Many people notice better symptom control when drops are used proactively, such as before long screen sessions, reading, driving, or spending time in dry environments like airplanes or office buildings.
👉 Systane Ultra Lubricant Eye Drops
A preserved artificial tear that provides fast, soothing relief for mild dry eye symptoms. Suitable for occasional use when dryness is infrequent.
👉 REFRESH TEARS Ophthalmic Solution
A well-known option for mild eye irritation and dryness. Best used a few times per day as needed rather than for frequent, long-term use.
Preserved vs Preservative-Free Drops
- Preserved drops are suitable for mild or occasional dryness and are generally safe when used up to 3–4 times per day. They’re convenient, affordable, and widely available.
- Preservative-free drops are gentler and recommended if you use drops frequently, have sensitive eyes, or experience ongoing or worsening symptoms.
👉 Systane Ultra Preservative Free
Provides longer-lasting lubrication while remaining gentle enough for regular use.
👉 Systane Hydration Preservative-Free
A popular preservative-free artificial tear often recommended by optometrists for people with frequent dryness or sensitive eyes. This formula helps improve tear film stability and provides smooth, long-lasting lubrication without irritation, making it a reliable choice for everyday relief.
👉 REFRESH PLUS Ophthalmic Solution Single Use Containers
A gentle, preservative-free option that’s suitable for frequent use and sensitive eyes. These single-use vials are convenient and reduce the risk of irritation with long-term use.
👉 HydraSense Advanced Preservative-Free Eye Drops
A popular Canadian option that helps relieve dryness and irritation without preservatives. Suitable for frequent use and chronic dry eye symptoms.
💊 Pharmacist Tip:
If you’re using eye drops several times a day on a regular basis, preservative-free options are usually the better long-term choice for eye comfort and eye-surface health.
Gels & Night-Time Ointments 🌙
If regular artificial tears don’t provide enough relief — especially if symptoms are worse overnight — gel drops or eye ointments may help. These products provide longer-lasting lubrication and help protect the eye surface while you sleep.
- Gel drops offer extended relief with less blurring than ointments
- Ointments provide the most protection but should be used right before bedtime
These options are particularly helpful for people who wake up with very dry, irritated, or gritty eyes, or who feel their symptoms reset every morning despite daytime treatment:
👉 Systane Lubricant Gel Drops
Thicker than regular artificial tears, these gel drops provide longer-lasting relief for moderate to severe dry eyes. Best used when thinner drops aren’t enough.
👉 Systane Nighttime Ointment
Provides intensive overnight lubrication for people with significant dry eye symptoms. Expect temporary blurred vision, which is why it’s used only before sleep.
👉 HydraSense Ultra Preservative-Free Gel Drops
A thicker, gel-style eye drop that provides longer-lasting lubrication for moderate dryness. This option can be especially helpful in dry indoor environments or during extended screen time when lighter drops just aren’t enough — and many people find the gel texture comforting without being overly heavy.
Additional Eye Drop Options — Popular & Well-Reviewed
In addition to the core artificial tears mentioned above, there are a few other popular eyedrops that many people find helpful for dry eye relief:
Thealoz Duo Eyedrops
A unique dual-action formula designed to both lubricate and protect the surface of the eye. Many users appreciate its longer-lasting comfort and gentle feel, making it a solid choice for those with moderate dryness or frequent irritation. Their gentle formula helps support tear film stability and can be especially soothing for moderate or persistent dryness.
👉 Thealoz Duo Preservative-Free Eye Drops
Biotrue Hydration Boost Lubricant Eye Drops
Inspired by the natural pH of healthy tears, these drops are formulated to provide long-lasting hydration without irritation. They’re popular for everyday relief and can be a good fit for people with mild to moderate dry eye symptoms. Many users appreciate the comfortable, gentle feel, especially for daily dryness or screen-related strain.
👉 Biotrue Preservative-Free Eye Drops
💊 Pharmacist Tip:
Not all eye drops are created equal — some are designed to feel more soothing or last longer, even if they contain preservatives. These options can be appropriate for milder or occasional dry eye symptoms, but if you find yourself using drops frequently, preservative-free formulas are usually a better long-term choice.
🤧 Dry Eye vs Allergy Eye Symptoms
Dry eyes and allergies can feel very similar, which often leads to confusion and trial-and-error with eye drops. Knowing the difference helps ensure you’re using the right treatment and avoiding products that may worsen symptoms over time.
Dry eye symptoms often include:
- Burning or stinging
- Grittiness or scratchiness
- Eye fatigue
- Symptoms that worsen later in the day or after screen use
Allergy eye symptoms are more likely if you experience:
- Itching (often the most telling symptom)
- Redness in both eyes
- Watery eyes
- Seasonal or environmental triggers
If itchiness or redness is a major symptom, allergies may be playing a role — see my guide to OTC allergy eye drops in Canada for comparison options.
🔥 Warm Compresses & Lid Hygiene
For many people, dry eye symptoms are linked to blocked oil glands along the eyelids, which causes tears to evaporate too quickly. Warm compresses help address this underlying problem rather than simply masking symptoms.
Benefits include:
- Loosening thickened oils in the glands
- Improving tear stability
- Reducing irritation and eyelid inflammation over time
For best results:
- Apply a warm (not hot) compress for 5–10 minutes
- Use several times per week
- Follow with gentle lid hygiene if recommended
Reusable warm eye compresses helps gently open eyelid oil glands and improve tear quality, hence they are ideal for daily dry eye management. Microwave-activated heat provides consistent, soothing warmth, making it a simple and effective addition to your dry eye care routine.
👉 MyHalos Microwave-Activated Warm Eye Compress
With consistent use, many people notice gradual improvement in comfort and fewer flare-ups.
💻 Lifestyle & Daily Habits That Help
Daily habits and environmental factors play a major role in dry eye symptoms. Even the best eye drops may not work as well if triggers aren’t addressed.
Helpful strategies include:
- Following the 20-20-20 rule during screen use
- Blinking consciously during long work sessions
- Keeping screens slightly below eye level
- Avoiding direct airflow from fans or vents
- Using a humidifier, especially during winter months
👉 LEVOIT Cool Mist Air Humidifier adds moisture to dry indoor air, which can help reduce tear evaporation. Especially helpful during winter months or in air-conditioned environments.
💊 Pharmacist Tip:
Lifestyle changes don’t replace eye drops, but they often make treatments more effective and help symptoms stay controlled between doses.
👁️ Tips for Contact Lens Wearers
Contact lenses can worsen dryness because they sit directly on the tear film and affect how tears spread across the eye’s surface. Symptoms may be more noticeable toward the end of the day or after prolonged screen use.
Helpful tips include:
- Using contact lens–compatible rewetting drops
- Avoiding redness-relief drops
- Taking regular breaks from lens wear
- Switching to glasses on very dry or long screen days
If symptoms persist despite these changes, an optometrist can assess lens fit or recommend alternative lens materials or wear schedules.
🚨 When to See an Optometrist or Doctor
Seek professional care if you experience:
- Eye pain
- Vision changes
- Light sensitivity
- Thick discharge
- Symptoms affecting one eye only
- No improvement after several weeks of proper treatment
Prompt assessment helps rule out infection, injury, or more serious eye conditions that may require prescription treatment.
Learn more about dry eye symptoms and treatment options from HealthLink BC.
✅ Key Takeaways
- Dry eye is common and very manageable with the right approach
- Artificial tears are first-line treatment for most people
- Preservative-free drops are best for frequent use
- Warm compresses and habit changes add meaningful benefit
- Persistent or painful symptoms should always be evaluated
Thanks for reading! If you found this helpful, check out these other pharmacist-written guides:
👉 Best OTC Allergy Eye Drops in Canada
👉 Allergy Relief Options: Antihistamines Explained
👉 Cold & Flu Remedies in Canada
👉 Essential Vitamins & Supplements for Adults
If you have questions or want to suggest a future topic, feel free to reach out through the Contact page!