blue blocker lcd panel test free sample

Online, there are a lot glasses claiming to block, filter or reduce blue light. Without clear criteria for comparison, it is difficult to assess the effectiveness of a pair. This brief article focuses on two tools to assess blue blocking glasses, both before and after the purchase.

The first step is to identify why you want to filter blue light. If your primary purpose is simply reduce the glare on the computer screen then a free software like f.lux may do the trick.

If you are looking to truly filter out blue light - then be sure to search for the transmittance spectrum of the glasses you"re considering. The transmittance spectrum is a graph that that illustrates the percent of light passing through the lens and most retailers should make them available if requested. For example, refer to the image below.

The Y-axis shows the percentage of light that passes through the filter. The X-axis shows the components of wavelengths that are filtered or pass through. In this example, ~99% of light with wavelengths shorter than 520 nm are prevented from passing through the glasses. This lens shown in this graph effectively filters all violet, blue and a portion of the green spectrum. This graph is the transmission spectrum for our blue blocking glasses.

If you have normal colour perception and your monitor can display RGB, the two colour spectra shown above should appear different. The upper spectrum represents a normal colour range. For the lower spectrum, a photo editing software was used to remove the blue hues. As you can see, the cyan component of the spectrum (which is a mix between blue and green) appears green. The blue component has disappeared.

True blue blocking glasses, or lens that filter out >90% blue light, the two spectra should appear very similar. This should occur because the glasses should do mechanically what we"ve done using the photo editing software : i.e. filter out blue light.

Do you have a pair of blue filtering glasses that you tested out? Did the spectra appear the same? Let us know! Email : info@blueblockglasses.com or leave a comment below.

No time to read about how to test blue light glasses? Maybe you don"t really care to know how much blue light is being blocked and you just want to know what the best blue light blocking glasses are.

With so many options on the market, and screen time rapidly increasing you might be asking yourself, “How do I know my glasses are actually blocking blue light?”

In this article, we’ll dispel myths about how to accurately test blue light filtering glasses, and explore the best ways to determine the quality and effectiveness of your blue light blocking glasses.

Effectively, we"re going to show you the easy way to test blue light glasses, talk about ways to identify when your blue light glasses work and when they don"t, and how to ensure that if you"re going to wear glasses to block blue light that you"re doing it effectively.

Just to let you know early, our business was built creating the best computer glasses with clear lenses, and the best blue light glasses for sleep with orange lenses, that far outpace the ones with only yellow lenses, and don"t radically distort your vision like the ones with red lenses. If you"re ready to take our word for it, just click here to shop the best.

The reason we do not recommend relying on a visual test where you look at particular color strips or doing the somewhat misleading "rgb color chart test" on your screen is simple.

The color grade, brightness levels, brand and type of screen itself are all variable factors that can distort colors and are going to result in unreliable and inconsistent results when trying to accurately test your blue light glasses.

As blue light operates on the visible spectrum of 400-500 nanometers, there is no possible way to know what part of the spectrum the colors on your laptop screen or other electronic devices are emitting without additional equipment.

Not to mention that roughly 4.5% of the population has some degree of color blindness, many of whom are not even aware of it. While it may appear your blue light glasses are passing an online test, the glasses may not actually be blocking the full spectrum of blue light, or conversely, failing the test does not necessarily mean your glasses for blue light protection isn"t working.

The best blue light glasses are the ones that block 99% or more of the entire blue light spectrum in a proper, scientific test, as well as help you feel the effects and benefits they claim to provide.

For instance, we had a test performed on our Night Swannies blue light glasses with the orange lenses by the University of Washington and the University of Indiana, proving that our blue light filter glasses block blue light just like we say they do, and improve sleep as well as work outcomes the following day.

Another reason these online tests aren’t reliable is that your eyes can deceive you, and are subject to optical illusions. This is why professional color graders use a series of color scopes to ensure that the colors in a film are correct, and do not just rely on their eyes.

Another example is the infamous blue/white dress that no one can agree on. This is another perfect example of how we can’t rely on our perception of color, especially when it’s displayed on a screen.

Now that we’ve established that doing things on a screen is an unhelpful way to test your blue light glasses, what is the right way to test your glasses?

This testing should be an essential part of quality control for blue light blocking glasses, and these results should be readily available to anyone who would like to access them, preferably published publicly on a website.

You should also be concerned if the tests provided are performed internally by the company and not performed and certified by an independent specialist testing facility.

Swanwick has its lenses independently tested by Colts Laboratories in Oldsmar, FL. These transmission reports are readily available and published at the following link: Swannies Transmission Reports.

Transmission reports can be daunting at first. What you’ll want to look for is the spectral analysis table that shows the % of transmission for each nanometer increment. You’ll want to look at the correlating percentages for each nanometer increment between 400-500nm, which is the blue light spectrum. For orange-tinted glasses, you should see less than 1% of blue light transmittance across the full spectrum.

For blue blockers with clear lenses, focus on the 400-450nm range as this is the most harmful part of the spectrum. If the test results show over 50% blue light transmission at 420nm and more than 70% transmission at 450nm, then they are unlikely to be very effective.

Swanwick’s customer service team is always on hand to help you with any questions about likely effectiveness of a blue light test, scientific studies or how to read blue light transmission reports.

Feel free to reach out to us via our Contact Us form and we’ll take care of your concerns. We"re passionate about blue light glasses and love being the reputable brand that people choose to get the protection they need to for sleep improvement and find more energy.

Blue light transmission reports are great for giving you an accurate indication of how much blue light your glasses block. Another part of the picture is to find out whether your brand of glasses have lenses that have been involved in any independent clinical trials.

These types of studies can also give you a good indication as to whether your blue light blocking glasses are likely to be an effective source of relief for disturbed sleep patterns.

Swanwick’s Night Swannies have been used in several independent studies which you can read about right here. The data from these studies showed that the blue light filtering technology used in Night Swannies improved both sleep factors and performance.

You may have seen examples of a test where little blue led lights are shone onto a card with blue light sensitivity, similar to the image below. Some blue light blocking glasses actually come with this card and light to ‘test’ your glasses. If you see this, be very cautious. This is a marketing trick which is designed to falsely represent the blue light blocking effectiveness of the lenses.

The blue light that is used to demonstrate this ‘test’ only operates at a very low blue light wavelength, usually around 405nm. So all this blue light test does is show you that the lenses filter blue light at that one very specific wavelength, which represents only 1% of the full blue light spectrum.

Most blue light glasses that rely on this trick block very little blue light across the full blue light spectrum and if you were to apply the same test to the lenses at higher wavelengths, they would most certainly fail. These low-grade blue blocking glasses need to block more blue light to be effective, and will not help with digital eye strain or sleep health.

As you can see, not every test is created equal and it’s easy to be tripped up these blue light gimmicks. So, what"s the best blue light filter test? How can you accurately test your blue light glasses? It depends.

As we like to say here at Swanwick, look at the science. The best way to test blue light glasses is to have an independent body perform the transmission test, with studies conducted under scientific conditions by professionals.

That"s your only way to get a true indication of the effectiveness of your blue light blocking glasses. Now that you are armed with the facts, you’ll be better informed about where to invest your money to protect your eyes, and get your best sleep of your life. Also, be aware that there is a difference between computer classes that filter less blue light and glasses to be worn before sleep which block more blue light.

If you’d like more help in deciding what quality blue light blocking lenses are right for you, please see our recommendations below. (We"ve got the answers.)

Digital eye strain and other symptoms from viewing LCD or LED screens, or any other type of screen for too long is becoming more prevalent. Utilizing the blue light filtering clear lenses in our Day Swannies Blue Light Glasses and Swannies Readers Blue Light Glasses is a great way to protect yourself from digital eye strain and work smarter.

Blue light from electronic devices is being emitted at an exponential rate and the fact is, everyone needs a pair of computer glasses that will block the necessary light on the blue light spectrum.

Worn in the hours before bedtime, Night Swannies block over 99% of all blue light to protect your melatonin* levels during the important pre-sleep phase of your evening. This helps you fall asleep faster, sleep longer and achieve a better quality of sleep.

For sleep improvement you can"t rely on computer glasses... not even our Day Swannies. While they will assist, they are designed to only block a certain amount of light on the blue light spectrum, and that will not prevent a disruption in your sleep.

To get the best night"s sleep of your life, you need to block 99% of blue light or more, and that"s why Night Swannies blue light glasses are considered to be the best blue light glasses on the market. We"re the most scientifically validated, and our orange lenses block over 99% of blue light. Get yourself (and everyone else in your family) a pair of them today:

Even tablets and devices with blue light filters aren"t enough to send you to sleep like a pair of Night Swannies that block both blue and green light.

Green light is the latest fad that some companies are hyping up. Usually, these companies are specifically marketing glasses with deep red lenses. Before you get caught in their marketing, we take a look at what green light actually is and whether or not it has an actual effect on your health in this article over here.

Spoiler Alert: No matter your concern, Night Swannies blue light blocking glasses block both blue and green light to the extent necessary to ensure an amazing night of sleep. It"s simply our business to offer you the best.

We spend more and more time staring at our computer screens at work, only to go home and continue our obsession with electronic devices. Digital LED screens shower us with high-energy blue light. While we get most of our blue light from the sun, our eyes are not designed to handle it for so many hours and at such a close proximity when the sun goes down.

Studies show that overexposure to blue light may be linked to digital eye strain, increased risk of macular degeneration, and interruption of sleep patterns.

One of the best ways to give your eyes a well-deserved rest from blue light over-exposure is to buy glasses with blue light blocking lenses. Not all blue light blocking glasses are created equal and many are not as effective as they claim to be. If you have any concerns about whether they work or not, there are ways for you to test your specks.

We look around and we see this amazing world full of colors that makes us smile, remember happy memories, and feel at peace. All of us have admired the photos of the turquoise blue colors of the Caribbean, reveled in the orange hues of a sunset, soaked in the vibrant magenta of a bougainvillea, gazed at the bursting yellow of a perfectly ripe mango, and melted with love looking at the blue-gray shade of our child’s eyes.

The retina contains two different types of light-detecting cells – rods and cones. Rods react when you are in low or dim light, when the objects appear gray. The cones are activated when there is sufficient light, and when that light reaches your eye, depending on the wavelength, a specific type of cone (red, green, or blue) will react and send the signal to the visual cortex of the brain along the optic nerve, which processes the data and forms a mental picture of the image. Most of us have about 6 million cones and 110 million rods.

The human eye can register wavelengths from 380 to 740 nanometers. Blue light rays are the ones with the shortest wavelength but with the most energy, which is why they are called high-energy visible (HEV) light rays. When we look at the sun, we don’t stare long enough for it to cause damage, as the sunlight hurts our eyes. But, we do spend seven to ten hours a day in front of our computer screens or scrolling on our smartphones at close range, which can also cause damage.

Blue light is not all good or bad. In daylight, it boosts our mood, makes us more alert, and gives us energy to complete all those spreadsheets and catch up with our PTA responsibilities. But come night-time, our circadian rhythm kicks in and we want to wind down, relax, and get ready to sleep.

Most of us admit we take our digital devices to bed with us to binge watch our favorite shows or to stay current on our social media feed. This is when blue light becomes our enemy, as it suppresses the production of melatonin, our sleep hormone, so we are restless and unable to fall asleep, which hampers our productivity the next day.

Daytime blue light filters are specifically designed to eliminate the most harmful frequencies between 400 and 450 nanometers, which damage the light-sensitive cells on our retina if we are exposed to too much of it. They still however let some of the blue light come through while lessening our eye strain, as some blue light is needed to regulate our circadian rhythm, help us stay alert and focused, help us be more productive, and give us more energy during the day.

Some filters however are designed for night-time use, and they block blue light in frequencies up to 480 nm. With the production of melatonin uninterrupted, we can relax and get a good night of sleep.

Nowadays, you can buy a blue light filter screen for your computer or tablet, and newer smartphones are equipped with some form of blue light protection and night mode. If you’d like only to reduce the glare on the computer screen, then a free software like flux may be sufficient. But, if you are looking to filter blue light, you’ll need ophthalmic lenses with protective coating that is designed to reflect and filter high energy blue light.

Clear lens computer glasses should be worn during the day only, as they are not designed to block out blue light completely, but rather filter it and relieve the symptoms of overexposure to blue light while staring at a computer screen.

To be sure the glasses you choose truly filter out blue light, you should contact the retailer and ask for a transmittance spectrum report, which will show you the percent of light passing through the lens.

In order to be functional in filtering blue light, your blue light glasses should filter down at least 30% of blue light across the entire blue light range. Most reputable companies will make these reports available upon request, but in case you cannot obtain one, visit your eye doctor and ask them to test your glasses with their lab-grade spectrometers.

One of them is to put your glasses on and observe the color that is reflected off the lenses. If the reflection is purple, that’s an indication that they are not filtering blue light effectively. If it’s blue, they are filtering at least some of it.

Another reliable way to test your blue light glasses at home is to use the RGB color circle test. Most of our computers and digital devices use a technology called Liquid Crystal Display (LCD). The screens are composed of many pixel panels and each pixel has a red, green, and blue component. There are many variations of these three colors which produce all the hues you see on a screen.

The blue part of the image should appear darker or black, and the green section might darken as well. The darker the sections appear, the more blue light is being filtered. You shouldn’t be concerned if the green section changes only slightly – only blue light blocking glasses intended for nighttime will block some of the green light as well.

If a company tries to sell you a “laser testing pen,” be advised that this method doesn’t work for testing blue light. It is only intended to test violet to ultraviolet light, which will not serve any purpose in testing your computer glasses.

Blue light glasses are a good choice if you spend too much time in front of the screen. But, make sure you get the right pair that will actually do what they are supposed to do.

When you are ready to buy yourself a pair of stylish blue light glasses, do your research and ask the retailer to send you a transmittance spectrum report along with your specs.

The good news is, you can start using blue light filter software to reduce eye strain and in some cases even improve your sleep. We put together a list of apps that you can use on your computer that will help you avoid the harmful effects of blue light.

Blue light is the reason your eyes start hurting after spending too long staring at your device screen. Continued exposure to blue light can suppress the production of melatonin or sleep-inducing hormone. This means that continued use of your devices keeps you alert and extends your day but also disrupts your natural sleep cycle. That could be causing your eyes to feel tired and overworked at the end of the day, as well as cause various sleep problems and even depression over time.

Filtering out blue light can help restore your natural sleep cycle and help other biological processes in your body that are determined by the levels of light that your body’s exposed to. Here are some examples of the blue light filter software that you can use for Windows, Mac, and Linux.

Iris mini is one of the best free apps that you can get to reduce the blue light while using your computer. It’s extremely simplistic and minimalistic: there’s no UI, no confusing multiple-option menus, no useless buttons. Once you download and install the software, Iris will appear on your screen as an icon in the ribbon menu of your computer.

Redshift is free and open-source blue light filter software that determines your location and adjusts the color temperature of your screen according to the position of the sun. You’ll see your screen transition to different color temperatures during daytime when there’s a natural source of light and during nighttime to match the light from the artificial light sources that surround you.

SunsetScreen is a free blue light filter app that takes regulating your screen’s brightness to the next level. SunsetScreen keeps the screen brighter for a longer period of time during winter months.

CareUEyes Lite is a free version of a blue light filter app called CareUEyes. Installing the Lite version of CareUEyes is an excellent way to test out the blue light filter app before buying the Pro version and see how you like it first.

However, if you need more features like the blue light filter, the sunrise/sunset switch, and timer, you can buy the Pro license that starts at $1.90 per month.

If you’re a Mac owner, you don’t have to download third-party blue light filter software to filter the blue light at night time. Night Shift shifts your display to warmer colors at night, which allows you to keep working on your computer safely after sunset.

To turn on Night Shift on your Mac, follow the path Apple Menu > System Preferences > Displays > Night Shift. There you have an option to Schedule the blue light filter to turn on and off together with the sunset and sunrise in your location, as well as choose a custom schedule for it.

The Manual option turns the blue light filter on until sunrise. You can also set the color temperature of the screen that you prefer moving the toggle from Less Warm to More Warm.

If you don’t want to install a third-party blue light filter app on your computer, check if your device has a built-in option to block the blue light. Similar to Mac’s Night Shift, Windows 10 has a dedicated Night Light feature that you can switch on and off, and Ubuntu 17.10 has an entire Night Light Mode.

Four, full-length digital adaptive test forms are available through Bluebook™, College Board’s test delivery platform. Download Bluebook to take practice tests 1–4 using the same interface, format, and scoring as the digital SAT.

The PDF versions of linear practice test forms are recommended only for students who will test with paper-based accommodations on test day. Visit Full-length Linear Practice Tests to download 4 official full-length linear (nonadaptive) SAT practice tests for free.

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We updated this article in November 2022 to ensure the information reflected current prices, features and more. Our top picks, based on testing notes from theGood Housekeeping Institute, remain the same.

Emitted by a myriad of devices from televisions to phones and almost any display, blue light — a certain grade of high-energy light on the color spectrum — is certainly known to disrupt natural circadian rhythms that guide your sleep, as well as trigger headaches after prolonged exposure, per published research. But evidence isn"t detailed enough yet to illustrate how blue light glasses (or blue light-blocking glasses) effectively prevent these symptoms and promote holistic eye health, despite marketing claims that promise these results. If you"re battling chronic headaches or finding your sleep disrupted by late-night work, a pair of blue light glasses may help alleviate some eye strain — though the science of this purported relief remains highly debated among healthcare experts.

To find the best blue light glasses, our health editors collectively evaluated over two dozen brands, making our recommendations based on wearability, comfort, design qualityand any reported symptom relief. We also partnered with a pair of leading optometrists and ophthalmologists to answer top questions about blue light glasses" efficacy and shopping tips for products that reduce blue light exposure over time. You can read more about how we evaluated blue light glasses firsthand at the end of this guide.

Blue light-blocking lenses are accessible for all Warby Parker products, regardless if they use prescription lenses or not, for a $50 surcharge. The brand"s Wright frames are a best-seller for a reason — they"re highly customizable, available in three different widths for a snug fit beneath your crown and come in a variety of finishes and styles that our editors loved. Our review of the Wright noted that Warby Parker"s frames were extremely easy to clean, given the frame"s body is made from durable polished plastic, and that the brand"s polycarbonate lenses are made with scratch-resistant coatings that stood up to daily wear and tear excellently.

While price points are elevated for standalone frames with blue light-blocking lenses alone, you get what you pay for — our review found the available styles produced by Warby Parker fit into most occasions and needs (home or office wear, casual use as well as prolonged wearing) with frames that were built to last.

A solid blend between performance and style, as well as a wider suite of blue light-only frames, Blenders" standalone blue light glasses are a favorite among editors who have worn them. Their unisex sizing model ensures an encompassing fit for most, and the retailers" size guide on its product pages contains some of the clearest fit details we"ve seen. If you"ve yet to wear a pair of blue light glasses during long work hours or late-night projects, Blenders" standalone products feel like the best introduction to the category — you"ll find that tint levels on these frames will help you recognize how much blue light is thrown off from some of your most used electronics.

Known as one of the largest online retailers of prescription eyewear, GlassesUSA was an early adopter in offering blue light-blocking coatings for nearly all of their available frames, regardless of prescription or style. Their proprietary add-on is known as "BLUEASE", according to a brand representative, and can be added onto available frames for a flat fee of $19 — this includes extremely popular styles from brands like Ray-Ban, Oakley, and Persol, among many others. If you"re shopping for corrective eyewear, GlassesUSA has long worked with customers using a wide array of vision insurance providers to lower prices on all of their selections, making shopping for prescription lenses enhanced with blue light add-ons a total breeze.

GlassesUSA doesn"t manufacture blue light frames exclusively since any of its available products are eligible to be upgraded with blue light-blocking features, but it does manufacture its own private-label products, like these oversized unisex frames in its Muse collection. Known as their best-selling frame for women, the Ottoto Bellona above features a very sturdy round build with structural arms that sit comfortably alongside your face. The adjustable silicone nose pads come in handy for a variety of bridge sizes.

If you"re looking for a pair of glasses that"ll blend seamlessly into your office wardrobe — without drawing any wondering looks from colleagues if you don"t regularly wear glasses already — Felix Gray"s offerings are designed for you. A wide range of blue light-blocking styles are made from the brand"s eyewear frames that are also available in prescription lenses for those who need them. The eyeglasses retailer launches seasonal collections frequently, introducing new products like this top-tested Alexander model that first launched in spring 2022; the brand"s Roebling and Nash frames are among the most popular options for those shopping for blue light specs all on their own.

Felix Gray also deliberately offers more than one kind of blue light-blocking lens for each of their popular frames; they"re divided into clear lenses and visibility-tinted amber lenses, which may be best for those who have late-night work routines. Brand materials suggest that Felix Gray"s amber lenses are designed to filter away more than 23 times the amount of blue light compared to other options on the market, and are designed with sleep in mind.

Brand founder Ashley Mariko Johnson tackles the one-size-fits-all issue in eyewear with Mohala, which aims to bolster design to be inclusive of more face shapes and sizes. Johnson designed Mohala offerings by consulting Black, Asian and Hispanic consumers directly, focusing on wider lenses, shorter temple lengths and more room for both natural and synthetic eyelashes. Mohala"s blue light-blocking specs are designed to accentuate square and oval-shaped faces, lower nose bridges and sit comfortably on a range of cheekbone sizes. Customers can easily filter specs by nose bridge options, face shapes, width and more fit options when shopping within Mohala"s online retail space (or locally in Hawaii, the brand"s home state).

The Keana frames provide a comfortable, encompassing fit for those with round, oval and heart-shaped faces, thanks to their spanning width (which is available in two different sizes for those with wider faces). Mohala"s blue light frames, including those on the Keana, perfectly straddle the amount of tint for long-wear use at the office or at home — our tests revealed their light tint is effective in evening hours in dark spaces while preserving color correctness during daylight hours. Multiple stylish finishes for the Keana frame will likely have you picking up more than one pair for year-round wear.

With many size options available in 18 different standalone frames, Ray-Ban makes a wide array of blue light glasses for women in more compact designs using their proprietary Everglasses technology. The classic Wayfarer frame can be ordered in a wide array of sizes up to an XXL, and comes with a universal nose bridge that testers found to be comfortable in extended wear.The photochromic lenses available on Ray-Ban"s blue light glasses shift in tint throughout the day depending on lighting, and are fitted with anti-reflective treatments and UV filters for additional protection.Our tests revealed that those with smaller faces may benefit from Ray-Ban"s petite offerings, which include XS and S sizes, for a fit that won"t have glasses sliding off throughout the work day.

While they"re not available for all prescription levels, Prospek"s highly popular frames loaded with their blue light-blocking lenses are available in a variety of magnification strengths for office use. Our review noted the glasses" lighter amber lenses adeptly shielded against computer use in a number of interior lighting settings. Since these frames are designed to be used with magnification enhancements for ease of reading, the low-profile lens translates into a more business-forward look. While fit wasn"t as snug and steady as other models on this list, Prospek"s blue light-blocking glasses are available in three different sizes at a standard width (just under 6"). Lenses are finished with an anti-glare and anti-fog coating, which makes for easier wear with appropriate face coverings in a shared office setting.

Good Housekeeping editors evaluated blue light glasses firsthand by wearing each pair throughout work days spent in front of laptops, monitors and desktop computers, as well as after-hours activities such as television watching and video game playing. We asked a wide array of editors — all with various head and face shapes and sizes, as well as varying lifestyles and schedules — to review glasses featured in this guide over the span of two consecutive months. They probed if these glasses were comfortable to wear, their performance under frequent use, and reported whether they noticed any reduction in eye strain or other observations during the review process.

As you"ll learn below, there is little to no clinical research or academic evidence to support claims that suggest blue light glasses reduce eye strain or chronic headaches linked to excess screen time all on their own. Blue light glasses often provide subjective comfort to those who choose to wear them — but as there are no manufacturing standards for blue-light blocking lenses established by governing groups like the American Academy of Ophthalmology, our testing solely rested on users" reported feedback on sustained comfort, product durability and self-monitored reactions to extended use of electronics. Eye experts told Good Housekeeping that measuring the efficacy of a pair of blue light-blocking lenses is mired in confusion, as there has yet to be a "gold standard" developed by leading experts in the field of eye care.

A market full of blue light glasses has sprung up over the last few years, with a range of affordable options to prescription-backed designer options that may even be partially covered by your optical insurance. But finding the right pair of blue light glasses can feel overwhelming, as standalone opticals aren"t regulated by any healthcare organization, and distinguishing a well-made pair among low-cost options can be quite difficult. Try to use the following parameters to help you pick the best pair of blue light-blocking glasses when shopping around:

✔️Tinted versus opaque lenses: Without advanced tools and in-the-know experts, it"s impossible to tell how much blue light a pair of glasses is capable of filtering just by looking at them. The best way to see if a pair of glasses actually aim to curtail exposure to electronic light is to examine the tint on the lenses closely; previously published research suggests that amber-tinted shades filter out blue light more effectively than clear, translucent lenses, especially over an extended period of use. Generally speaking, a darker tint equates to more blue light exposure being effectively blocked; while there are clear lenses used in blue light-blocking products, they may not be as effective as a tinted option. Tinted lenses are visible to most consumers when reviewing products in person, but yo