Understanding eye strain—symptoms, causes, and prevention

In this day and age, eye strain is an all too common experience. Learn what it is, and ways your eye doctor may recommend finding relief or helping prevent it from happening in the first place.

Published on September 1, 2025

What is eye strain?

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It’s important to know that eye strain isn’t a disease, it’s a general term used to describe the feeling of tired eyes. Also known as asthenopia, many people experience eye strain when they do activities that require a lot of focus, like reading, driving, or using digital devices for hours. Different people describe it in different ways—some might say their eyes feel dry or watery, while others might complain about blurriness or headaches. It’s common and can affect anyone, but if your feelings of eye strain are concerning, persistent or severe, contact your eye care professional for guidance and treatment.

Common symptoms of eye strain

Eye strain can be experienced a number of different ways, depending on the cause of the strain. You may experience:

  • Burning or itchy eyes
  • Blurry or double vision:
  • Sore eyes
  • Heavy or tired eyes
  • Headaches
  • Neck and shoulder pain
  • More light sensitivity

If you’re experiencing symptoms of eye strain that are persistent or severe, reach out to your eye doctor for their recommended treatment options or lifestyle changes.

What can cause eye strain or fatigue?

Uncorrected vision problems

If you have uncorrected vision issues like nearsightedness (trouble seeing far away), astigmatism (irregular eye shape causing blurry vision), or presbyopia (age-related farsightedness), you may feel eye strain more often. When your eyes don’t see well, you may try to compensate with things like squinting or leaning, which can lead to muscle fatigue in the face, neck, shoulders and back. If you find yourself frequently squinting or leaning closer to get a better view, see an eye care professional for a comprehensive eye exam.

Too much screen time

Today, many of us spend hours on computers, smartphones, or tablets for schoolwork and entertainment. When you’re focused on a screen, you tend to blink less often, which can lead to dryness and irritation. The bright light from screens can also make it more challenging for your eyes to relax. It’s important to recognize that this prolonged screen time is a significant contributor to eye strain and that regularly breaking up your screen sessions can help.

Reading a lot

Reading is a great activity to relax and stimulate your imagination, but if you do it for too long without stopping, your eyes can feel tired and strained. This is especially true if you don’t take breaks or are reading very small print.  

Driving for long periods of time

When you drive, your eyes are working hard to keep your focus on the road and continually adjust to changes in light and distance. This constant adjustment can create strain.

Bad lighting

Proper lighting is important, especially when you’re using your eyes to focus for long periods of time. Working in bright environments or dimly lit spaces can increase eye strain. If there’s too much glare from bright lights or not enough light to clearly see, your eyes have to work harder.  

Five ways to help prevent eye strain

There are some simple ways to help ensure that you won’t struggle with the feelings of eye strain, even if your work is computer-intensive or you enjoy reading a lot.

1. Follow the 20-20-20 rule

This rule is a simple and effective way to give your eyes a break. Every 20 minutes, look at something that’s at least 20 feet away for at least 20 seconds. This will help your eyes relax and help prevent them from feeling too tired from focusing up close for too long. You can even set a timer on your phone to remind you to take these breaks.

2. Adjust your workstation

Having a good, ergonomic setup at your computer or desk can make a huge difference. For many, this means having their screen  positioned about 20 to 26 inches away from your eyes and slightly below eye level. Keeping the brightness and contrast comfortable for your surroundings is also essential. Your screen shouldn’t be significantly brighter or dimmer than the rest of the room. If you need to, try using an anti-glare screen cover to help reduce reflections on your screen. 

3. Check your lighting

The light in your workspace matters! If the lighting is too bright, it can create glare, and if it’s too dim, your eyes will struggle to see properly. Be sure to use lamps that direct light onto your desk and avoid sitting in direct view of bright, glaring lights. Keeping your area well-lit can help ease the strain on your eyes. 

4. Remember to blink

When you’re focused on something like your computer screen, you blink far less than you would otherwise. Blinking is super important—it’s your eye’s natural way of cleaning off irritants and staying lubricated. You can remind yourself to blink more by writing a note that says “Blink!” and sticking it near your screen.

5. Take regular breaks

Make it a habit to step away from your work. Consider taking short breaks every hour to stretch your legs, grab a snack, or just relax your eyes. This can mean closing your eyes for a moment or looking out the window for a little while. Taking time to recharge is crucial to keeping your eyes feeling comfortable. 

See an eye doctor with any questions or concerns

While some cases of eye strain can be managed with simple changes, seek out help if your eye strain concerns you or if you experience:

Persistent Symptoms

If your eye strain symptoms don’t seem to improve after you’ve taken breaks and made changes to your work environment, it’s time to make an appointment with an eye doctor. Remember, your vision can change at any age, and sometimes it’s hard to recognize. Annual eye exams can help detect these changes so that your eye doctor can correct them and help prevent associated eye strain.

Changes in vision

If you notice a change in how clearly you see things—like frequent blurriness or difficulty focusing, even when you’re not straining your eyes—it’s important to get this checked out. An eye doctor can help figure out if you need glasses or if there’s another issue causing the change.

Severe discomfort

If you experience pain, headaches that don’t go away, or any strange symptoms that you haven’t had before, don’t hesitate to seek care. These might indicate a more serious problem that requires treatment, so it’s always best to err on the side of caution. 

FAQs

Frequently asked questions

What is eye strain?

Eye strain, or asthenopia, is a broad term covering the temporary feeling of discomfort in your eyes after using them too intensely. It can happen with excessive screen time, reading, or focusing closely on objects.

What are the common symptoms of eye strain?

Symptoms may include sore or tired eyes, blurred vision, headaches, difficulty concentrating, and dry or watery eyes. You may also feel heavy eyelids or experience sensitivity to light.

How can I prevent eye strain?

You can help prevent eye strain by following the 20-20-20 rule, adjusting your screen and lighting, blinking often, taking breaks, and maintaining a comfortable workspace.

When should I see an eye care professional?

Any time you experience symptoms that are concerning to you, you should reach out to your eye care professional for guidance. This is especially true if you notice any changes in your vision or if you experience severe discomfort.

Do blue light glasses help with eye strain?

Blue light glasses are popular, but there’s not enough well-conducted research to show they reduce eye strain.

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