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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →For occasional use with mild dry eye and an otherwise healthy eye surface, preserved artificial tears may be enough. If you need lubricating drops frequently and over time—more than four times a day is one example—preservative-free tears are generally recommended. The right choice also depends on your eye health, contact lenses, package handling, cost, and the specific product label.
How to choose between preserved and preservative-free tears
For artificial tears, use frequency and duration are the most useful starting points. The American Academy of Ophthalmology (AAO) says preserved tear substitutes may be sufficient for mild dry eye when the ocular surface is otherwise healthy. For frequent, chronic use, it generally recommends nonpreserved tears; more than four applications per day is an example, not a study statistic or a universal cutoff.
- Occasional use: Preserved tears may be suitable if symptoms are mild and your eye surface is healthy.
- Frequent, ongoing use: Consider preservative-free tears, particularly if you use drops more than four times daily.
- Moderate or very dry eyes: Mayo Clinic also describes preservative-free drops as generally recommended in these circumstances.
- Persistent or worsening symptoms: Seek professional advice rather than repeatedly switching products.
These are general recommendations for lubricating artificial tears, not an individualized diagnosis. They do not automatically apply to prescription medicines, redness-relief drops, antibiotics, or every other eye preparation. Product ingredients and directions vary.
What the preservative does—and what the concern is
Preservatives help discourage microbial growth in multi-dose eye-drop containers after opening. Single-use vials that are discarded after one use do not need a preservative for that packaging purpose. Preservative-free options also include some multi-dose bottles with specialized dispensing systems.
#1 Best Overall
- LASTING RELIEF: Original strength lubricating formula soothes mild symptoms of eye dryness
- PRESERVATIVE-FREE: Made with zero preservatives to relieve mild symptoms of dry eyes including burning, irritation, and discomfort
- FAST ACTING: Instantly moisturizes and lubricates
- RELIABLE PROTECTION: Active ingredients provide lasting lubrication for dry eyes
- GENTLE: Safe to use as often as needed. Great for dry, sensitive eyes
TFOS DEWS II identifies benzalkonium chloride (BAK) as the most frequently used preservative in eye-drop preparations and describes evidence associating chronic exposure to topical preservatives with ocular-surface toxicity and adverse changes. The report reviews laboratory and clinical concerns; that evidence does not mean every person using every preserved lubricant will be harmed. Preservative-free drops avoid an added preservative, but still need careful handling and must be used according to their instructions.
Compare the practical trade-offs
| Consideration | Preserved tears | Preservative-free tears |
|---|---|---|
| Packaging | Often sold in multi-dose bottles; the preservative helps discourage microbial growth after opening. | Available in single-use vials and specialized multi-dose bottles. |
| Use pattern | May be sufficient for mild dry eye with an otherwise healthy ocular surface. | Generally recommended for frequent, chronic use, such as more than four times daily. |
| Handling | A multi-dose bottle can be convenient. Follow its opening and discard directions. | Single-use vials require opening and handling individual units. A preservative-free multi-dose dispenser is another option. |
| Cost and convenience | Often less costly, according to AAO consumer guidance. | Single-dose packs are typically more expensive; packaging choice can also affect convenience and environmental impact. |
| Contact lenses | Preservative status alone does not establish that a drop is safe to use over lenses. | Preservative-free status alone does not establish compatibility with lenses either. |
AAO says most artificial tears may have comparable efficacy, but notes important inconsistencies in the underlying studies. The evidence does not establish one brand as best for everyone; compare the product’s formulation, directions, and usability instead.
Rank #2
- Advanced Relief for Dry, Irritated Eyes: Systane COMPLETE Preservative-Free Lubricant Eye Drops provide soothing relief for all types of dry eye, including aqueous-deficient, evaporative, and mixed dry eye. Helps relieve discomfort due to environmental exposure such as sun and wind
- Lasting Relief from One Drop: Formulated with Propylene Glycol (0.6%), it provides up to 8 hours of dry eye relief. Systane COMPLETE Preservative-Free helps relieve common dry eye symptoms like sore, watery, stinging, burning, tired, dry, and irritated eyes. For mild to moderate dry eye sufferers who want dependable hydration
- Advanced Nano-Droplet Technology: Nano-droplet technology features the rapid delivery of this soothing drop over the entire eye surface—resulting in better coverage vs Systane Balance. It provides fast hydration, evaporation protection and long-lasting dry eye relief
- Easy Dosing: The multi-dose bottle, with its ergonomic design for easy drop administration. Instill 1–2 drops as needed throughout your day. With just one drop, Systane COMPLETE Preservative-Free provides 8 hours of dry eye symptom relief in a preservative-free formula ideal, for sensitive eyes
- Trusted Brand, Convenient Design: Systane is a trusted name in eye care, recommended by eye care professionals for reliable dry eye relief. The multi-dose easy-application bottle offers on-the-go hydration, keeping eyes refreshed and moisturized wherever your day takes you
How to check whether drops can be used with contact lenses
If you plan to put drops in while your lenses are in, choose a product clearly labeled as safe or designed for contact-lens wear. Other drops may instruct you to remove lenses and wait before putting them back in. Follow the directions for the specific product; being preservative-free is not a substitute for checking its lens instructions.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.When to get medical advice
Contact an eye doctor promptly for pronounced redness, pain, light sensitivity, blurred vision, or discharge; these symptoms may indicate a serious eye problem. Persistent or worsening dry-eye symptoms also warrant professional assessment instead of ongoing product changes.
Quick Recap
Rank #4
- FAST ACTING: Rapid relief to comfort dry, irritated eyes
- LASTING RELIEF: One drop provides 10+ hours of dry eye relief (results may vary) (Data on file, AbbVie, Inc. REF-136415)
- UNIQUE FORMULA: Enhanced with antioxidants and plant-based flaxseed oil (inactive ingredients), which contains omega-3s
- SOFT-SQUEEZE MULTIDOSE BOTTLE: Features a double lockout system that keeps drops sterile
- PRESERVATIVE-FREE: Gentle and safe to use as often as needed
Rank #3
- ORIGINAL STRENGTH: Provides temporary relief for mild, occasional dry eye symptoms
- FAST ACTING: Instantly lubricates and moisturizes
- PRESERVATIVE-FREE: Made with zero preservatives to relieve mild symptoms of dry eyes including irritation, and discomfort
- SOOTHING: Great for dry, sensitive eyes
- SOFT-SQUEEZE MULTIDOSE BOTTLE: Features a double lockout system that keeps drops sterile
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
