What Is A Computer Glass?

What Is A Computer Glass?

Last Updated on by Daniel Lawrence

Are you an ardent computer user? If yes, then you must be reading this. We’ll be talking about computer glasses, otherwise known as blue light glasses. Read through this guide for more information on computer glasses.

What Is Blue Light?

Blue light is a color in the light spectrum visible to human eyes — though it doesn’t actually appear blue to the naked eye.

It’s a short wavelength that produces high amounts of energy (from 400 to 500 nanometers) and is often referred to as high-energy visible light (HEV). In fact, any source of visible light emits blue light, whether it’s an artificial source like a digital screen or a light bulb, or a natural one, like the sun.

Do your eyes feel irritated and dry after a long workday in front of the computer? Computer vision syndrome results from the high visual demands of computer work. This temporary vision condition is caused by staring at a computer screen for long periods of time without the proper eye protection.

Common symptoms of computer vision syndrome include blurred vision, redness in the eyes, back or neck strain, dry eyes, double vision, and dizziness.

The best way to protect your eyes, and eliminate the eye strain associated with extended computer use, maybe computer glasses.

What Are Computer Glasses?

Many of us wear glasses to correct some kind of vision problem. But not all glasses are right for all situations.

Computer glasses differ from regular glasses in that they are specifically made to help reduce the eye strain associated with computer work.

The average person works approximately eight hours a day in front of a computer. These long hours make us more prone to vision-related problems. And sadly, we’ve become accustomed to the fact that our eyes just feel tired and irritated at the end of the workday.

The anti-reflective coating on computer glasses helps reduce the glare that bounces off the screen and light coming from the device. Glass color tinting is also a function that helps increase the screen’s contrast without making it too harsh for your eyes.

How computer glasses work

Computer glasses are special-purpose eyeglasses meant to optimize your eyesight when you’re looking at digital screens. They’re designed to: reduce glare (a major cause of eyestrain), increase contrast and maximize what you see through the lenses—making it easier to look at a screen for longer periods of time. Here are the two main features you’ll see in glasses like these:

Anti-reflective (AR) coating: Anti-reflective coatings reduce glare bouncing off screens and from light sources. Specially designed computer and gaming glasses from Gunnar and Ambr Eyewear offer these coatings and prescription glasses can get anti-reflective coatings as well. However, not all anti-reflective coatings are the same. Older glasses might have a cheap coating that was constantly catching smudges and dirt—actually causing eyestrain and vision problems as a result.

How Does Blue Light Affect Your Eyes?

  • It Obstructs the Wake/Sleep Cycle

Before the invention of artificial light, the sun regulated our sleep schedules. After sundown, the darkness signals to our bodies that it’s time to produce melatonin, the hormone responsible for enabling us to sleep.

Nowadays, we’re exposed to blue light throughout the day and late into the night. While exposure to any light in the evening hours delays the production of melatonin, blue light waves can be particularly problematic as they radically disrupt these signals, causing less melatonin to be generated.

This essentially throws off our natural body clocks, since the brain associates blue light with daytime, making it harder to fall asleep at night and wake up in the morning.

  • Sleep Disruption

Blue light regulates our circadian rhythm, also known as the sleep/wake cycle. Basically, it’s how our bodies know when to go to sleep and when to wake up. It’s not just our coffee and energy drinks that perk us up in the morning; blue light from the sun is responsible for increased energy and wakefulness. Sounds good right?

Well here comes the negative – our habit of checking our emails before bed or falling asleep in front of the TV can disrupt our natural sleep patterns by unnaturally exposing us to blue light at night. Wearing blue-light-blocking glasses is an effective way to reclaim a good night’s sleep.

  • It May Increases the Risk of Macular Degeneration

A 2018 study by the University of Alcalá suggests that a high level of blue light exposure may increase one’s risk of macular degeneration later in life, which can lead to permanent vision loss.

This is because blue light penetrates right through the cornea to the retina, damaging light-sensitive cells in the retina.

  • It Can Potentially Cause Eye Strain

Blue light scatters more easily than other visible light. This unfocused light reduces contrast and can contribute to digital eye strain, characterized by headaches, neck pain, and blurred vision.

That’s where computer glasses come in.

Research has indicated that lenses that filter out blue light significantly increase contrast. Computer glasses with yellow-tinted lenses may improve comfort levels when viewing digital devices for prolonged periods of time.

Types of Lenses

Most computers are distanced at 20 to 26 inches from the user’s eyes, and this is considered to be the intermediate zone. However, just like in regular glasses, not everyone’s eyes are the same in each zone.

Several different lenses are offered with computer glasses:

  • Single vision computer glasses reduce the risk of blurred vision, eye strain, and bad posture. Single vision lenses are for any age computer user.
  • Occupational progressive lenses are multifocal lenses that correct near, intermediate, and distance vision. These lenses give you a larger more comfortable vision at the computer, but it is not recommended for long-distance tasks.
  • Occupational bifocal and trifocal lenses offer a higher zone for intermediate and near vision rather than regular bifocal and trifocal lenses. The position of the intermediate and near vision zones can be customized to your specific computer needs.

How does blue light affect our sleep?

There are a lot of factors in our busy lives that can affect our sleep. Obvious things like stress over a presentation or an exam, worrying about money, babies crying or cats throwing up hairballs can cause sleeplessness or interrupt a good night’s rest. What we may not realize is that exposure to blue light can be a sneaky cause as well. Blue light suppresses the body’s secretion of melatonin, a hormone that regulates sleep and wakefulness.

Though blue light is present in the sun’s rays during the day, it is less pronounced around dusk, which is why sunsets tend to appear red. The lack of blue light in the evening allows the body to produce melatonin freely, signaling that it is time to prepare for sleep. Exposure to blue light from electronic devices or artificial lighting after the sun has gone down can disrupt our circadian rhythm, making it harder to fall asleep or get a good night’s rest.

Benefits of Computer Eyeglasses

  • Reduced Glare

Computer screen glares increase the intensity of light and dark colors displayed. And this makes your pupils struggle to keep up with the light by constantly dilating. That’s where computer eyeglasses come in handy. These glasses include anti-glare coating, designed to keep exhausting screen glare at bay.

  • Better Eye Focus

Computer eyeglasses correct astigmatism, a common refractive error that often causes blurry vision. Your eye doctor will take precise measurements for your lenses to make sure the optical center of each lens lies in front of your pupils when you put them on. These lenses keep your eyes relaxed for a prolonged period to keep objects in focus and offer the largest field of view.

  • Blue Light Filter

Computers emit blue-violet radiations which harmful and its extended exposure to your eyes leads to problems like eye strains, erratic sleep patterns, and macular degeneration in some. People who face one or more of these problems can use computer protection glasses that have amber-tinted lenses that increase the contrast. It also acts as a shield to protect your eyes from harsh lights emitted from the computer screen

  • Reduced in CVC Symptoms

A study suggested employees sitting in front of the computer for long hours usually have no visual complaints. However, the same set of employees experience challenges with productivity and accuracy. To ensure a reduction in symptoms of CVS, it is advised that you invest in a pair of protective eyeglasses. Symptoms like dry eyes, red eyes, and disrupted eyes usually go away with a good pair of computer glasses.

  • Better Posture

A lot of times, to get a better look at what’s written on the computer screen, we hunch over or peer closer not realizing the damage it does to the eyes. Computer glasses give you a clearer vision without you having to strain your eyes, neck, and back.

Not everyone is a candidate for eyeglasses. Patients who experience digital eye strain will be recommended a pair of computer eyeglasses that will help them work better.


Not everyone needs computer glasses. If you don’t experience constant eye strain or you don’t have a problem with your vision while at a computer, then computer glasses may not be for you. However, if you are constantly experiencing eye strain then computer glasses may be exactly what you need.