Dry eyes happen when your tears evaporate too quickly, your eyes don’t produce enough tears, or the tears you make don’t spread evenly across the surface of your eye. The good news is that most cases respond well to a combination of simple habit changes, over-the-counter drops, and environmental tweaks. Here’s what actually works.
Why Your Eyes Feel Dry
Your tear film has three layers that work together. An outer oily layer, produced by tiny glands in your eyelids called meibomian glands, slows evaporation. A thick middle water layer, produced by your lacrimal glands, provides moisture and nutrients. And an inner mucus layer helps tears spread smoothly across the eye’s surface. A problem with any one of these layers can leave your eyes feeling gritty, burning, or irritated.
The most common type of dry eye is evaporative, meaning the oily outer layer is too thin or missing, so tears dry up too fast. The second type is aqueous deficiency, where your glands simply don’t produce enough of the watery component. Many people have a mix of both.
Common Triggers You Might Not Suspect
Screen time is a major contributor. When you’re focused on a phone, computer, or TV, your blink rate drops significantly, which means tears aren’t being refreshed across the eye surface as often as they should be. Air conditioning, forced-air heating, ceiling fans, and airplane cabins all accelerate tear evaporation too.
Several common medications reduce tear production. Antihistamines (including over-the-counter allergy pills like diphenhydramine) are among the worst offenders, increasing the 10-year risk of developing dry eye by about 24%. Antidepressants such as fluoxetine, sertraline, and paroxetine raise the risk by roughly 44%. Beta-blockers, diuretics, anti-anxiety medications, and oral steroids also contribute. If you started a new medication around the time your eyes got drier, that’s worth mentioning to your doctor.
Contact lens wear, aging (especially for women after menopause), and autoimmune conditions like Sjögren’s syndrome are other well-established causes.
The 20-20-20 Rule for Screen Users
Every 20 minutes, look at something 20 feet away for at least 20 seconds. This simple habit, recommended by the Mayo Clinic, forces you to blink at a normal rate and gives your tear film a chance to recover. If you forget, set a timer on your phone or use a browser extension that reminds you. Positioning your monitor slightly below eye level also helps, because it reduces the amount of exposed eye surface between blinks.
Choosing the Right Eye Drops
Artificial tears are the first line of defense, but not all drops are the same. Preserved drops (the standard multi-use bottles) contain a chemical preservative that can irritate the eye surface over time. They’re generally well tolerated if you use them four to six times a day or less. If you need drops more often than that, or if your eyes are sensitive, switch to preservative-free single-use vials.
For mild dryness, any basic artificial tear will help. For moderate dryness with a gritty, sandy feeling, look for thicker gel drops, which coat the surface longer but can temporarily blur vision. Apply gel drops at bedtime if blurring bothers you during the day. Avoid drops marketed as “redness relief,” as those contain vasoconstrictors that can worsen dryness with repeated use.
Warm Compresses for Clogged Oil Glands
If your dry eye is the evaporative type, meaning your eyelid oil glands are blocked or sluggish, warm compresses can help liquefy the thickened oil and get it flowing again. The goal is to heat the inside of the eyelid to about 40 to 41.5°C (104 to 107°F). Because roughly 5°C of heat is lost between the outer eyelid skin and the inner surface where the glands sit, the compress itself needs to be around 45 to 46.5°C (113 to 116°F) at the skin surface.
A microwavable eye mask holds heat more consistently than a washcloth, which cools quickly and needs frequent reheating. Apply it for about 10 minutes once or twice daily. After removing the compress, gently massage your closed eyelids from top to bottom on the upper lid and bottom to top on the lower lid to push the loosened oil out of the gland openings. Consistency matters more than intensity here: daily compresses over several weeks produce noticeably better results than occasional use.
Adjusting Your Environment
Indoor humidity of about 45% or higher is best for your eyes. In dry climates or during winter when heating systems run constantly, a room humidifier near your desk or bed can make a real difference. A simple hygrometer (available for a few dollars) lets you monitor the level.
Direct airflow is another easy fix. Point car vents away from your face, avoid sitting directly under ceiling fans, and if you use a desk fan, angle it so it doesn’t blow across your eyes. Wraparound glasses or moisture-chamber glasses can help in particularly dry or windy environments.
Omega-3 Fatty Acids and Diet
Omega-3s, found in fatty fish like salmon, sardines, and mackerel, as well as flaxseed and walnuts, support the oily layer of the tear film. While study results have been mixed on supplements specifically, increasing dietary omega-3 intake is a low-risk strategy that many eye care providers recommend alongside other treatments. If you choose a supplement, look for one with both EPA and DHA forms.
When Drops Aren’t Enough: Prescription Options
If over-the-counter drops and lifestyle changes aren’t controlling your symptoms after a few weeks, prescription treatments target the underlying inflammation that drives chronic dry eye. One common prescription drop works by calming overactive immune cells on the eye surface, reducing cell death, and increasing both tear production and the density of mucus-producing cells. Another blocks a specific inflammatory pathway by preventing immune cells from migrating to the eye’s surface and triggering further irritation.
Both prescription drops take time to work, often four to eight weeks before you notice meaningful improvement. Some people experience a temporary burning sensation when first starting them. They’re designed for long-term use, not as-needed relief.
In-Office Procedures
For persistent dry eye, your eye doctor may suggest punctal plugs, tiny devices inserted into the tear drainage channels in your inner eyelids. They work by keeping your natural tears on the eye surface longer instead of draining away. Temporary plugs made of collagen dissolve on their own after days to weeks, giving you and your doctor a way to test whether the approach helps before committing to longer-lasting silicone plugs that stay in place until removed.
Thermal pulsation treatments, performed in-office, apply controlled heat and pressure to unclog meibomian glands more thoroughly than a home compress can. Intense pulsed light therapy is another option that targets inflammation along the eyelid margin. These procedures typically need to be repeated every several months to maintain their effect.
How Dry Eye Is Diagnosed
If you visit an eye doctor for dry eye, one common test involves placing a small strip of paper inside your lower eyelid for five minutes to measure tear production. Wetting of more than 15 mm is considered normal. Between 5 and 10 mm indicates moderate dryness, and less than 5 mm signals a significant tear deficiency. Your doctor will also look at the tear film under a microscope, often using a special dye that highlights areas where the surface of the eye is damaged. These tests together help determine whether your problem is low tear volume, rapid evaporation, or both, which guides treatment choices.