Computer Monitor Eye Strain: Settings and Habits That Help

If your eyes become tired, dry or blurry at your computer, start with the setup—not a new monitor or blue-light glasses. Screen position, glare, text size, uninterrupted near work and an unsuitable glasses prescription can all contribute to digital eye strain, also called computer vision syndrome. Symptoms often ease after stopping screen work, but can recur if the cause remains. American Optometric Association (AOA)

Why your eyes feel strained

Two problems can overlap:

• Dryness: During screen use, you may blink less often or fail to close your eyelids fully. That leaves the eye’s surface less well moistened.
• Visual effort: Sustained focusing, small text, reflections and uncorrected vision problems can make computer work uncomfortable.

Cleveland Clinic

Burning or a gritty feeling may suggest dryness; headaches or difficulty seeing the screen may point toward visual demands or a prescription issue. These are clues, not a diagnosis, and both problems can occur together. National Eye Institute; AOA

Adjust these six things first

1. Set a comfortable distance—and enlarge the text

The AOA suggests placing the screen 20–28 inches (about 50–70 cm) from your eyes. Treat that as a starting point, not a rigid target. You should be able to read comfortably with your back supported, without leaning toward the display. OSHA gives a wider preferred range of 20–40 inches and notes that text may need enlarging. AOA; OSHA monitor guidance

Use browser zoom, application font controls or display scaling before moving closer to tiny text. If larger text still looks blurry, that is a reason to check your vision rather than keep adjusting the monitor.

2. Lower the screen slightly

Place the monitor directly in front of you, with its top at or slightly below eye level. Its center should generally sit below your straight-ahead gaze. Avoid a setup that makes you lift your chin or keep your head turned. Bifocal users may need a lower position to avoid tipping their head backward. OSHA

3. Remove reflections before changing display settings

Position the screen at right angles to a window rather than facing it or having it directly behind you. Adjust blinds and move desk lamps so their light does not reflect in the display. Clean the screen, too. If repositioning cannot control glare, an anti-glare filter is an option—but it should not make the image harder to see. OSHA workstation guidance

4. Balance room lighting and readability

Avoid a large brightness difference between the screen and its surroundings. Use soft, reasonably even room lighting, then adjust the display until text is comfortable to read. Dark characters on a light background are less affected by reflections than light characters on a dark background. There is no need to force dark mode if it makes reading harder. OSHA

5. Look away and blink

Use the 20-20-20 rule as a break reminder: every 20 minutes, look about 20 feet away for 20 seconds. During the pause, blink gently and fully. Also build longer breaks or non-screen tasks into extended computer sessions; switching straight to your phone is still near-screen work. AOA

For a closer look at the schedule and its evidence, see our guide to the 20-20-20 rule.

6. Address dryness separately

Redirect fans or air-conditioning vents away from your face. Artificial tears may help mild dry-eye symptoms, but they will not correct a glasses prescription or remove screen glare. National Eye Institute

If using drops while wearing contacts, choose a product explicitly labeled for use with contact lenses; preservative-free does not automatically mean contact-compatible. Our guide to eye drops for digital eye strain explains the choices. American Academy of Ophthalmology (AAO)

Do you need a new monitor or computer glasses?

Try these adjustments before replacing a usable monitor. If you do buy one, prioritize features that let you achieve a comfortable position and readable text rather than treating an “eye-care” label as a treatment.

Prescription computer glasses and blue-light-filtering glasses are different. A prescription tailored to your actual screen distance may help when everyday glasses are unsuitable. Bring that distance to your eye appointment. AOA

Blue-light-filtering lenses may not reduce short-term computer-related eye strain compared with non-blue-light-filtering lenses, according to a Cochrane review of trials published through March 2022. They are not the first place to spend money for this problem. Cochrane

When to get your eyes checked

Book an eye exam if symptoms persist, worsen despite changes, or keep returning. An exam can assess dryness, your prescription and how your eyes focus and work together. Tell the eye-care professional when symptoms start and whether they improve away from screens. AOA; National Eye Institute

Seek same-day eye care for sudden vision changes, eye pain or light sensitivity rather than assuming it is screen strain. Sudden loss of vision needs emergency assessment. AAO; NHS eye-pain guidance

This information is educational and does not diagnose the cause of your symptoms.