Dry, tired eyes?

You might be surprised to learn that we typically blink 13 to 17 times per minute. Because blinking happens so quickly and mostly subconsciously, we rarely notice it.

During prolonged screen time, this rate decreases significantly to around 5 to 7 times per minute. Worse, not only does the frequency decrease, but so does the quality of our blinking. The number of incomplete blinks, in which the eyelids do not close completely, increases.

One of the primary functions of blinking is to keep the eyes moist and healthy. Every time we blink, a thin layer of tear film is spread evenly across the eye's surface.

Besides providing crucial lubrication and washing away debris or irritants that may settle on the eye, the tear film also transports nutrients and oxygen to the cornea. Since the cornea lacks blood vessels, the outer corneal cells rely mostly on oxygen diffusion from the air, which the tear film facilitates.

Learn why complete blinks matter Why full eyelid closure matters, what research found about screen reading, and how BlinkEasy reminders encourage complete blinks.

When we blink less frequently, the tear film is not replenished as often, leading to dry spots on the cornea. This can cause discomfort, blurry vision, and a sensation of grittiness or burning in the eyes. Chronic dryness can also lead to more serious issues like inflammation or damage to the corneal surface.

Computer vision syndrome (CVS), also called digital eye strain, describes eye and vision complaints associated with extended screen use, including gaming. Symptoms can include dry-feeling eyes, irritation, headaches, and blurred vision. Read our gaming eye strain guide.

The intense focus required by the eyes while working on a screen often leads to a reduced blink rate, exacerbating symptoms of dryness and eye strain. Prolonged exposure to screens and the visual demands of the task (e.g., reading small text), especially in a low-light environment, can further strain the eyes and worsen symptoms.

Why your eyes feel dry at the computer Blinking, airflow, and text size: practical adjustments for more comfortable computer use.

Looking into the distance gives the muscles that focus your eyes up close a chance to relax. Try the 20-20-20 rule: every 20 minutes, look at something about 20 feet (6 meters) away for 20 seconds.

BlinkEasy can tell when you've been looking at the screen for too long and reminds you when it’s time for a break. Use the pause to look into the distance and let your eye muscles relax before returning to your work.

How the 20-20-20 rule works Give your eyes a break from close-up work: every 20 minutes, look about 20 feet away for 20 seconds.