Walk into any pharmacy and you'll find a wall of eye drops promising relief from dry, tired, red, itchy eyes. Most of them are some version of the same idea — but the differences between brands and formulations matter more than you'd think. Here's how to pick the right one for your eyes, and how to know when over-the-counter just isn't enough.
Start with what kind of dry eye you have
Dry eye disease isn't one thing. The two big buckets are aqueous-deficient (you don't make enough tears) and evaporative (your tears evaporate too quickly, usually because the oil layer is thin or unstable). The treatment that works for one doesn't necessarily work for the other. If you don't know which type you have, the safest starting point is a basic preservative-free artificial tear used four times a day for two weeks. If symptoms don't budge, see an eye doctor for a proper workup.
Preservative-free is almost always the right call
Preservatives in multi-dose bottles — most commonly benzalkonium chloride (BAK) — are designed to keep bacteria from growing in the bottle. They also irritate the ocular surface, especially with frequent use. If you're using drops more than three or four times a day, switch to preservative-free single-use vials or a multi-dose preservative-free bottle.
Yes, single-use vials cost more. But the cornea is delicate tissue and the daily exposure to preservatives genuinely matters over time.
Watery vs. lipid-based drops
Standard artificial tears (like Refresh Tears, Systane Ultra, TheraTears) replenish the aqueous layer of the tear film. They're a good general-purpose option. Lipid-based drops like Refresh Optive Mega-3, Systane Complete, and Soothe XP are specifically designed to support the oil layer of the tear film — and they tend to give meaningfully better relief if evaporative dry eye is your main issue (which it is for most people over 40).
Drops to avoid (or use carefully)
Redness-reducing drops — products like Visine Original (tetrahydrozoline) or Lumify (brimonidine) constrict blood vessels to whiten the eyes. They don't treat the underlying problem and the older versions can cause rebound redness with regular use. Lumify is the safer option, but neither belongs in a dry-eye routine.
Allergy drops — fine for allergic conjunctivitis, but ketotifen and similar antihistamines can worsen dryness over time.
Anything with the active ingredient tetrahydrozoline — same as Visine Original. Skip it.
When OTC isn't enough
If you're using preservative-free drops four or more times a day and still uncomfortable, it's time for an actual eye exam. Two prescription anti-inflammatory drops — cyclosporine (Restasis, Cequa) and lifitegrast (Xiidra) — are the workhorses of medical dry-eye treatment in the US, and they treat the underlying inflammation rather than just lubricating.
Short courses of steroid drops, punctal plugs, autologous serum tears, and in-office treatments like thermal pulsation (LipiFlow, iLux, TearCare) or intense pulsed light (IPL) all have a role for more stubborn cases. Don't suffer through chronic dry eye thinking OTC drops are all that exists.
Two practical rules for picking
Rule 1: pick a drop, then actually use it. Consistency matters more than brand. A drop used four times a day on a schedule will outperform a fancier one used once when symptoms get bad.
Rule 2: if a drop stings, stops working, or your eyes look worse after a week — switch. Different formulations work for different people. There's no shame in trying two or three before you land on one that fits.
The short list
For mild dryness: Refresh Tears, Systane Ultra, or TheraTears in preservative-free vials.
For evaporative dry eye / MGD: Systane Complete, Refresh Optive Mega-3, or Soothe XP.
For contact lens wearers: Rewetting drops labeled safe for use with contact lenses (Blink Contacts, Refresh Contacts).
For nighttime use: Gel or ointment formulations — Systane Nighttime, Refresh PM, GenTeal Severe — for severe dry eye or nocturnal lagophthalmos.