Key takeaways
- Eye strain is usually caused by several factors, including long screen time, reduced blinking and poor lighting.
- Small habits like taking breaks, adjusting lighting and updating your prescription can make the biggest difference in reducing eye strain.
- Blue light lenses are often as a coating to prescription glasses, though non-prescription options are also available.
Have you ever closed your laptop or shut off your phone for the night—and still feel like the light from the screen is lingering in your eyes?
Many of us spend hours each day on phones, computers and tablets. It’s easy to wonder if that glow is doing more than just lighting up the screen. That’s why blue light glasses have become so popular.
Blue light glasses can help some people feel more comfortable during long stretches of screen time. But research is mixed on whether they prevent digital eye strain or headaches.
That doesn’t mean they’re useless. When paired with simple habits like taking breaks and adjusting your screen settings, blue light glasses may help if you spend a lot of time on screens.
What Blue Light Glasses Are and How They Work
Blue light glasses filter or block the blue light from digital screens and certain types of lighting.
Blue light isn’t new. It’s part of the range of light colors you can see and is naturally present in sunlight. But phones, computers and LED lights also emit blue light. Blue light glasses work by adding a filter to the lens that reduces how much of that light reaches your eyes. Depending on the lens, the filter may be subtle or more noticeable.
Two common types include:
- Clear lenses with blue light coating. These look like regular glasses. They have a thin layer added to the surface of the lens and the coating reflects or filters a portion of blue light before it reaches your eyes.
- Amber or tinted lenses are often used at night. They filter a larger portion of the blue light that can affect sleep.
The filtering technology of your lens can also vary with blue light glasses. Some use a surface coating, while others have the blue light filter built directly into the lens itself.
What Research Says About Blue Light Glasses?
Blue light glasses are marketed as a way to reduce eye strain. Some claims say they prevent headaches and improve sleep. But when researchers look at the evidence, the results are mixed.
That’s partly because digital eye strain isn’t caused by blue light alone. Focusing on a screen for a long time, not blinking as much or sitting in poor lighting can also play a role in tired or irritated eyes.
Do Blue Light Glasses Help with Eye Strain?
Digital eye strain is one of the main reasons people try blue light glasses. Symptoms can include dry eyes, blurry vision and tired eyes. These happen after long stretches on a computer or phone.
Blue light filtering lenses may reduce glare for some people which can make screens feel more comfortable. But most research shows that screen habits and ergonomics play a bigger role in eye strain than blue light exposure.
Do Blue Light Glasses Help with Headaches?
Headaches after long sessions of screen time are often linked to digital eye strain. When your eyes work harder to focus, it can lead to tension, discomfort and headaches.
Blue light glasses may help you if glare from screens is part of the problem. Reducing glare can make screens feel easier on your eyes during long stretches of work or gaming. But research hasn’t found clear evidence that blue light filtering alone prevents headaches. Headaches are more closely tied to screen habits, lighting or vision changes.
If you regularly get headaches while using screens, an eye exam can help. Your eye doctor can decide if your prescription needs to be updated or if lens coatings could help with comfort.
Do Blue Light Glasses Help with Sleep?
Blue light plays a role in your body’s natural sleep cycle. Bright screens at night can signal the brain to stay alert. This can delay the release of melatonin, the hormone that helps regulate sleep. Blue light filtering lenses, especially amber or darker lenses, can help reduce light exposure at night.
Still, most sleep experts recommend limiting your screen time before bed. It’s the most reliable way to support healthy sleep. Even with blue light glasses, scrolling at night can still make it harder for your brain to wind down.
Night mode can support other steps you take throughout the day to limit blue light exposure. While night mode can help make the screen feel easier on the eyes before bed, blue light glasses filter the blue light before it reaches your eyes.
Is Blue Light From Screens Harmful to Your Eyes?
Despite popular concerns, studies do not show that blue light from digital screens harms your eyes.
Screens from phones, computers and tablets do emit blue light, but the amount is much lower than what we’re exposed to from natural sunlight during the day.
Most eye health experts say the bigger issue with screens is how long we’re on them without breaks. Staring at a screen for hours can reduce how often you blink. It can also make your eyes work harder to focus. These activities can lead to dryness, fatigue and discomfort.
Blue light glasses can still help you feel more comfortable during long stretches screen time. But many recommendations focus less on blocking blue light and more on building better screen habits.
When Blue Light Glasses May Be Worth Trying
It can sound like blue light glasses are a scam because there is no solid evidence that links them to better eye health.
Do you sit in front of a computer for most of your work day, replying to emails and taking video calls? If that’s the case, blue light glasses might be the answer to make those days a little more comfortable on your eyes, especially if glare is part of the problem.
Or, if you’re someone who relaxes at night by scrolling through your phone or watching shows on a tablet, blue light glasses can help reduce some of the bright light exposure before bed.
And maybe it’s just as simple as telling your eye doctor, “I already have prescription glasses, so let’s add on an extra layer of protection.”
Blue light glasses don’t dramatically improve eye health, but they can add an extra layer of comfort during screen-heavy days.
How Much Do Blue Light Glasses Costs?
Blue light glasses depend on the type of lenses you choose and whether they’re prescription.
For example, someone who spends most of the day on a computer might buy a simple pair of non-prescription blue light glasses online. These typically range from about $20 to $80 and are often marketed for casual screen use.
If you already wear glasses, blue light filtering can be added as lens coating when you’re updating your prescription or picking out new frames. In that case, the cost is usually part of the lens package and is about $30 to $100 depending on the lens type and brand.
Prescription lenses with built-in blue light filtering or premium digital lenses can cost more. They’re designed for everyday wear and long hours of screen use. Because blue light lenses are usually added to prescription lenses, some people choose them during their eye exam, especially if they already plan to update their lenses.
When Vision Insurance May Cover Blue Light Glasses
Many vision insurance plans, like DeltaVision®, can help cover the cost of prescription eyewear. Blue light filtering lenses are usually offered as an optional upgrade when you buy prescription glasses but check your plan’s coverage for specific details.
Other Ways to Reduce Eye Strain from Screens
Blue light glasses are just one option for making screen time more comfortable. Small changes to your screen habits and workspace can make an even bigger difference.
One of the simplest habits to add to your day is the 20-20-20 rule. Every 20 minutes, look at something about 20 feet away for at least 20 seconds. This gives the muscles in your eyes a short break from focusing on a screen.
A few other small changes can also help with digital eye strain:
- Adjust your screen brightness. Your screen shouldn’t be significantly brighter or darker than the room you’re in.
- Reduce glare. Position your monitor to avoid reflections from windows or overhead lighting.
- Blink more often. Something that should be natural, but people blink less when looking at screens. This can lead to dry eyes.
- Keep your prescription up to date. Even small vision changes can make screens harder for your eyes to focus on.
Frequently Asked Questions
Blue light glasses aren’t considered a scam, but some claims about them can be exaggerated. Research shows they can help reduce glare and make screens feel more comfortable for some people. However, studies haven’t found consistent evidence that they prevent eye strain, headaches or long-term eye damage.
Most children do not need blue light glasses specifically for screen use. The bigger focus for kids is screen habits, such as taking breaks, limiting screen time before bed and making sure they have regular eye exams.
No, blue light coatings are not the same as anti-reflective lenses. Anti-reflective (AR) lenses reduce glare from screens and bright lights, which can improve visual comfort. Blue light coatings are made to filter a portion of blue light from digital screens. The good news is that many modern lenses have both features built in.
Some gamers prefer blue light filtering lenses because they can help with glare during long sessions in front of a monitor. But overall screen setup like lighting, screen brightness and taking breaks will create more comfort for gaming.
Computer glasses are typically prescription lenses made for screen distance, which is usually about arm’s length away. They can also include anti-reflective coatings or blue light filtering, but their main purpose is to improve focus and comfort when using a computer.
Many vision insurance plans, like DeltaVision®, can help cover the cost of prescription eyewear. Blue light filtering lenses are usually offered as an optional upgrade when you buy prescription glasses but check your plan’s coverage for specific details.
