Miebo is a prescription eye drop used to treat dry eye disease. It is FDA-approved specifically for relieving both the signs and symptoms of dry eye, and it was studied primarily in patients whose dry eye is linked to problems with the oil-producing glands in the eyelids. What makes Miebo unusual is that it contains no water and no preservatives. The active ingredient itself is the entire formulation: a single, clear liquid that forms a protective layer over the surface of your eye.
How Miebo Works
Most dry eye drops add moisture back to the eye. Miebo takes a different approach. Instead of replacing tears, it prevents the tears you already have from evaporating too quickly.
When you place a drop of Miebo on your eye, the liquid spreads into a thin, uniform layer across the tear film. This layer sits at the surface and acts as a physical barrier, slowing evaporation and shielding the cornea from the friction of blinking. In clinical measurements, patients using Miebo showed increased tear film stability and a thicker lipid (oil) layer on the eye’s surface.
There’s also a secondary effect. Researchers have found that the liquid gently cools the surface of the cornea, just enough to activate temperature-sensitive nerve endings. You don’t consciously feel this cooling, but it triggers a reflex that increases your natural tear production and blink rate. So Miebo both protects the tears you have and prompts your eyes to produce more.
The Dry Eye Type It Targets
Dry eye disease falls into two broad categories. One is caused by not producing enough tears. The other, called evaporative dry eye, happens when tears evaporate too fast because the oily outer layer of the tear film is deficient. This oil is produced by tiny glands in the eyelids called meibomian glands, and when those glands aren’t working properly, the condition is known as meibomian gland dysfunction.
Miebo was tested in patients with this evaporative form of dry eye. In the two pivotal clinical trials (called GOBI and MOJAVE), all 1,217 enrolled patients had a history of dry eye disease along with clinical signs of meibomian gland dysfunction. That said, the FDA-approved indication is for dry eye disease broadly, not limited to the evaporative subtype alone.
Clinical Trial Results
Both trials compared Miebo against saline drops over eight weeks, with patients using the drops four times daily. Miebo outperformed saline on every primary and secondary measure.
At week eight, patients using Miebo had significantly less corneal surface damage (measured by staining scores) and reported meaningfully lower eye dryness on a visual scale. The improvement in dryness scores appeared as early as week two and continued through the end of the study. Burning and stinging sensations also improved significantly by week eight compared to saline.
How It Differs From Other Eye Drops
Traditional artificial tears are water-based solutions, sometimes with added oils or thickening agents. They work by temporarily supplementing your tear volume. Miebo is 100% active ingredient with no water, no buffers, and no preservatives. Because of this, the drop doesn’t need pH adjustment and tends to feel smooth and comfortable on application, without the brief sting some medicated drops cause.
The absence of water also means bacteria can’t grow in the solution, which is why Miebo can be used until the expiration date printed on the bottle after opening. Many preservative-free artificial tears come in single-use vials that must be discarded after one application, so this is a practical advantage.
It’s also worth noting that Miebo is not an anti-inflammatory drug like cyclosporine or lifitegrast drops. It doesn’t suppress the immune system or target inflammation directly. Its benefit comes entirely from physically protecting the tear film and triggering natural tear reflexes.
Dosage and How to Use It
The standard dose is one drop in each affected eye, four times a day. The bottle requires a specific technique: squeeze it while holding it upright, then flip it upside down and release pressure to draw air in, then squeeze again while the bottle is inverted over your eye to release a drop.
If you wear contact lenses, remove them before applying Miebo and wait at least 30 minutes before putting them back in.
Storage
Store Miebo at room temperature, between 68°F and 77°F. Once opened, you can continue using the same bottle until the printed expiration date, which simplifies things compared to drops that require refrigeration or single-use packaging.