The muscles inside your eyes tense up during any prolonged close-up task, especially screen work. Relaxing them comes down to giving those muscles regular breaks from focusing at short distances, improving your workspace setup, and using a few targeted techniques that release built-up tension. Most eye strain is temporary and causes no lasting damage, but the discomfort is real and avoidable.
Why Your Eye Muscles Get Tense
A small ring of muscle inside each eye, called the ciliary muscle, controls your ability to focus at different distances. When you look at something close, like a phone or computer screen, this muscle contracts to thicken the lens and sharpen the image. Hold that contraction for hours and the muscle fatigues, just like holding a bicep curl too long. That fatigue is what you feel as eye strain: aching, heaviness, blurred vision, or a dull headache behind your eyes.
The only way for the ciliary muscle to truly relax is to look at something far away. At distances of 20 feet or more, the muscle releases its grip on the lens and returns to a resting state. This is the biological basis for nearly every relaxation technique that actually works.
The 20-20-20 Rule
Every 20 minutes, look at something at least 20 feet away for at least 20 seconds. The American Academy of Ophthalmology recommends this as the single most effective habit for preventing and relieving eye strain from screen use. Twenty seconds is roughly the minimum time it takes for the ciliary muscle to fully release its contraction and reset.
In practice, 20 feet means looking out a window, across a large room, or down a hallway. If you work in a small space without a distant view, even looking at the farthest wall is better than staring at a screen 2 feet away. Set a recurring timer on your phone or computer until the habit becomes automatic.
Near-Far Focus Shifting
This exercise works the ciliary muscle through its full range of motion, similar to stretching a tight muscle after sitting in one position. Hold a pen or your thumb at arm’s length and focus on it for 5 to 10 seconds. Then shift your gaze to an object 10 to 20 feet away and focus there for 5 to 10 seconds. Repeat this cycle 10 to 15 times.
The alternating contraction and relaxation improves the muscle’s flexibility and reduces the stiffness that builds up during long stretches of close work. It’s particularly useful at the start or end of a workday, or any time your vision starts to feel sluggish when switching between your screen and the rest of the room.
Palming
Palming combines warmth, darkness, and a mental break to relax your eyes more deeply than distance-gazing alone. Rub your palms together briskly until they feel warm. Close your eyes and cup your palms over them, fingers crossing lightly over your forehead. Don’t press on the eyeballs. Adjust your hands so no light leaks in, then keep your eyes closed and breathe normally for one to two minutes.
The warmth from your hands increases circulation around the eyes, and total darkness lets both the ciliary muscle and the pupil muscles fully relax, since they no longer need to adjust for light or focus. Aim for 5 to 10 minute sessions twice a day if you do heavy screen work. Shorter sessions of about 15 breaths also help when done more frequently throughout the day.
Warm Compresses
A warm, damp cloth held over closed eyes for 5 to 10 minutes relaxes the muscles around the eye sockets and also benefits the tiny oil glands along your eyelids. These glands produce the oily layer of your tear film that prevents tears from evaporating too quickly. Heat softens any thickened oils blocking the gland openings, improving tear quality and reducing the dry, gritty sensation that often accompanies eye strain.
Research published in Medicina found that eyelid warming significantly increased tear film height and improved oil gland function in the upper eyelids. A gentle massage of the closed lids after warming enhances the effect. Use a clean washcloth soaked in comfortably warm (not hot) water, or a microwavable eye mask designed for this purpose.
Screen and Workspace Setup
Your environment plays a surprisingly large role in how hard your eye muscles work. A few adjustments can reduce strain before it starts.
Screen distance: People who experience eye strain symptoms tend to sit closer to their screens. Research in the journal Eye found that symptomatic computer users averaged about 56 cm (22 inches) from their monitors, while comfortable users sat at roughly 62 cm (24 inches) or beyond. For smartphones, the comfortable distance was about 35 cm (14 inches) compared to 30 cm in those with symptoms. Pushing your screen back even a few inches reduces the focusing effort your ciliary muscle needs to maintain.
Screen angle: Position your monitor so your eyes look slightly downward at the screen rather than straight ahead or upward. This reduces the amount of exposed eye surface, which slows tear evaporation and means your upper eyelid doesn’t have to stay pulled as wide open.
Lighting: Match your screen brightness to the ambient light in your room. If your screen glows noticeably brighter than your surroundings, your pupils constantly adjust between the screen and everything else, adding strain. In a typical office at around 500 lux of ambient light, modern screens perform well without needing to be cranked to maximum brightness. Reduce overhead glare by angling your screen away from windows and bright ceiling lights, or use a matte screen filter.
Blinking More Deliberately
During focused screen work, many people blink less completely. Partial blinks fail to spread a full layer of tears across the eye surface, leaving dry patches that cause irritation and blurred vision. The dryness itself forces the eye muscles to work harder to maintain focus through an uneven tear film.
Make a conscious effort to blink fully and slowly every few minutes. Some people find it helpful to pair deliberate blinks with the 20-20-20 rule: when you look away from the screen, blink slowly 5 to 10 times before returning. Keeping artificial tears at your desk helps on days when blinking alone isn’t enough, especially in air-conditioned or heated rooms where humidity is low.
What Doesn’t Help: Blue Light Glasses
Blue light filtering lenses are widely marketed for eye strain, but a 2023 Cochrane systematic review found they likely make no difference. Across multiple randomized trials, blue light glasses showed no meaningful reduction in visual fatigue scores compared to regular lenses. The strain you feel from screen work comes from sustained close focusing and reduced blinking, not from the wavelength of light your screen emits. Your money is better spent on a good pair of prescription glasses optimized for your working distance if you need vision correction.
Putting It All Together
The most effective approach combines habit changes with environmental fixes. Set your screen at arm’s length or slightly beyond, angle it so you look slightly down, and match its brightness to your room lighting. Build the 20-20-20 rule into your workflow with a timer. When your eyes feel particularly heavy or achy, spend a few minutes palming or apply a warm compress. Practice near-far focus shifting once or twice during a long work session.
None of these techniques require special equipment or much time, and the American Academy of Ophthalmology notes that eye strain from screen use does not cause permanent damage to your eyes. The goal is comfort, and for most people, a few consistent small changes eliminate the problem entirely.