Dry eyes when running

Eyes dry out when you run because you create your own wind. Air rushes across the eye’s surface at your running pace, cold or dry air speeds evaporation further, and squinting into sun or effort cuts down on full blinks. Wraparound sunglasses and a brimmed cap help the most. Use lubricating drops before you head out or after you finish, never while moving, and carry the bottle in a zipped pocket.

Why running dries your eyes

Standing still on a calm day, the air around your face barely moves. Run at an easy pace and you push through it steadily for the whole run; add a headwind and the air speed across your eyes climbs further. Moving air pulls moisture off the tear film faster, the same way wind dries laundry on a line. The tear film’s oily outer layer slows evaporation, but it can only do so much against constant airflow.

Effort changes how you blink, too. Runners tend to fix their gaze on the path ahead, and in bright sun they squint. Both mean fewer complete blinks, so the watery layer isn’t spread back across the eye as often.

Cold-morning runs

Winter mornings are the hardest. Cold air holds little moisture, so it’s dry even when the thermometer reads a damp-feeling 30°F. Cold wind also sets off reflex tearing: eyes water heavily, tears stream sideways toward your temples, and you finish the run with wet cheeks and eyes that feel gritty an hour later. Those reflex tears are mostly water and drain or evaporate quickly, which is why eyes can feel drier after watering. Dry eyes from cold air explains that reflex.

• Wear wraparound glasses even before sunrise; clear or light-tint lenses block wind without darkening the path.
• Pull a neck gaiter or buff up over your nose and mouth on very cold days, but leave a gap so your breath doesn’t fog your lenses.
• Plan out-and-back routes so the headwind comes first and the tailwind brings you home.
• Warm up indoors for a few minutes so you aren’t squinting through the first cold mile.

Sunglasses, hats and what to look for

The single most useful piece of gear for dry eyes on the run is a pair of wraparound sunglasses. Flat lenses let air rush around the sides; a curved frame that sits close to the face blocks much more of it. Look for a pair that doesn’t bounce, with rubber nose pads and temple grips, so you aren’t constantly pushing them up. Vents along the top of the lens help with fogging.

A cap with a brim shades your eyes so you squint less, and in rain it keeps drops off your lenses. On long summer runs, a cap also keeps sweat from running into your eyes, which stings and makes you rub them with salty hands.

Using eye drops around a run

Quell’s Uses are listed on its label as For use as a protectant against further irritation or to relieve dryness of the eye, and the directions are Apply 1 drop 3 times per day in each eye. It’s designed to reinforce the tear film’s oil layer to help reduce moisture loss, which fits the problem of airflow drying the eye. How you fit those drops around a run matters:

• Before a run, put the drop in a few minutes ahead of time at home, so your vision is clear when you start.
• After a run, wash your hands and face first. Sweat and sunscreen on your fingers shouldn’t get near your eyes.
• Don’t try it mid-run. Stop fully, step off the path and stand still if you need to use drops during a long outing.
• Count running drops within the label’s three a day, not in addition to them.
• Keep the tip clean, as the label says: Do not touch tip of bottle to any surface to avoid contamination.

Where to carry the bottle

A bottle of Quell is .33 fl oz (10 mL), small enough to carry. The question is keeping it clean, closed and within its temperature range.

• A zipped pocket in running shorts, a jacket or a belt, so it can’t bounce out.
• Inside a small plastic bag in a hydration vest, so sweat and gel wrappers don’t touch the cap.
• Close to your body in winter, not in an outer pocket where it gets cold.
• Not in a car parked at the trailhead on a hot afternoon. The label says Store between 15° to 30°C (59° to 86°F).

Races, trail runs and long days out

Race mornings add standing around in wind at the start and dust kicked up by a crowd. Trail runners deal with dust on dry paths and branches near the face. On race day, use your drop before you leave home and keep the bottle in your bag at the finish. On trails, glasses double as protection from twigs and grit. If something gets into your eye, stop, don’t rub, and rinse it out; if it still hurts or your vision isn’t clear, get it checked.

Contacts, kids and other drops

Many runners wear contact lenses to avoid glasses bouncing. Quell’s label doesn’t give directions for use with contact lenses, so ask your eye doctor before combining the two. The label also doesn’t cover children or use alongside other eye drops; those questions go to an eye doctor or pharmacist.

When dry eyes after running need a doctor

Eyes that feel dry for an hour after a cold run and then settle are common. Eyes that stay dry for days, hurt, or blur your vision are not, and an eye doctor can work out what’s behind it. Follow the label’s line on when to stop: Stop use and ask a doctor if you feel eye pain or changes in your vision, if irritation or redness continues, or if the condition worsens or persists for 72 hours.. The dry eye self-check can help you put a pattern into words, and dry eyes for outdoor workers covers long hours in wind and sun.