What Are Blue Light Glasses And Do I Need Them?
It has been claimed that blue light glasses can improve sleep quality, reduce eye strain from digital screens, and even cure headaches. Proponents claim that blue blockers can reduce headaches. Let’s determine whether these claims are true or false. Whether blue light glasses actually help or not is the subject of our next investigation.
Furthermore, we will spend a fair amount of time discussing the implications of blue light. Is blue light actually harmful? And if it is, can blue light glasses provide a solution?
How Effective Are Blue Light Glasses?
There is no definitive answer to whether blue light glasses work, but a good pair may provide some benefit.
A good pair of blue light glasses, such as Felix Gray, may be of some help if you are seeking to simply block blue light. If you suffer from migraine attacks or hypersensitivity to light, then you may want to consider purchasing a quality pair of blue light glasses.
When choosing blue light glasses, you should be careful, because a number of brands block little or none of the blue light at all. At best, most are inconsistent in the amount of light that they block.
Blue light blocking glasses may be a good idea if you are concerned about digital eye strain, but most people would benefit from saving their money and giving their eyes frequent breaks from screen use.
People who suffer from migraine headaches or are light sensitive should consider light sensitivity glasses, which differ from blue blockers in many ways. If you would like to know why all of this is true, read the following article.
Where Does Blue Light Come From and What Is It?
Among the artificial sources of blue light are fluorescent lighting, LED lighting, and digital screen devices such as computers and smartphones, whereas the sun is a natural source of blue light. As you know, visible light consists of a spectrum of wavelengths. Blue light is the most energetic wavelength on the visible spectrum, with a wavelength energy level of its own.
Digital screens of all kinds – computers, smartphones, televisions, tablets – emit large amounts of this high-energy blue light. As a result, blue light has the potential to negatively affect your eye health more than other types of visible light.
What Is the Harmful Effect of Blue Light?
Since digital devices emit so much blue light, it makes sense that spending too much time on them can result in eye strain, which may result in symptoms such as discomfort, blurred vision, headache, and dry eyes as a consequence. You may even be advised to reduce your exposure to blue light by your eye care professional.
Blue light has been linked to harmful effects, but studies have been inconclusive so far. Research is ongoing, but mixed results have been reported.
It is possible to determine whether or not blue light filter glasses can prevent migraine attacks or reduce light sensitivity if you suffer from migraine attacks.
Irritation of ocular surface cells by blue light in vitro
Researchers concluded in 2019 that blue light can damage human ocular surface cells, and that shades can protect those cells from harm. This conclusion was derived from an in vitro study (which was conducted in an artificial environment rather than on actual persons). As living human beings were not used in the study, this recommendation was merely theoretical.
The effects of blue light on cataracts
According to a study published in 2020, there is a correlation between increased blue light exposure and cataract development in rats. However, people, with a few exceptions, do not exhibit such a response.
A look at blue light from the experts
In a 2021 article published on the American Academy of Ophthalmology website, the AAO acknowledges the existence of digital eye strain but does not claim that blue light damages the eyes or adversely affects their health.
Blinking less often causes a series of temporary eye symptoms known as eye strain when people spend long periods of time staring at digital screens. Taking frequent breaks from the screen is the best way to prevent eye strain, since they are caused by how people use their screens.
Despite the lack of scientific evidence supporting blue light as harmful to eyes, the American Academy of Ophthalmology does not recommend blue light-blocking glasses.
You may be suffering from eye strain due to many other factors. If we put it simply, blue light isn’t responsible for your discomfort, but rather effects such as decreased blinking.
Assuming that the symptoms of eye strain are temporary, there is a big question that remains unanswered:
Are your eyes actually damaged by blue light?
In spite of assertions on the internet and in the media to the contrary, there is no substantial evidence to support the claim that blue light damages the eyes.
Eye strain is a more serious issue
Approximately seven hours and four minutes are spent per day watching a screen, according to data from DataReportal.
In case you have experienced digital eye strain, also known as computer vision syndrome, or CVS, you may have felt your eyes were bothering you after hours in front of a computer or other screen.
There is a high rate of digital eye strain among those who use digital devices, according to VisionCenter.org, with 90% of users experiencing symptoms such as:
Back, neck, or shoulder pain
Having difficulty focusing between near and far objects
Symptoms of eye discomfort or strain
It is difficult to keep your eyes open
Sensitivity to light has been increased
Symptoms of headaches
Vision that is blurry
Having a double vision
Blinking has been reduced
Experiencing dry eyes
Fatigue of the eyes
Redness of the eyes
You will experience varying levels of symptoms depending on how long you have been using the digital device. Underlying eye conditions will also play a role as well as other factors such as the amount of glare from overhead lights on the screen.
It is fortunate, however, that the symptoms associated with digital eye strain or computer vision syndrome are usually temporary, and will be gone shortly after you stop using your device. Sometimes, however, they can persist for some time after you stop using your device.
Digital eye strain is caused by a variety of factors
Next time you are using a computer or other digital device, observe your eye movements. You will likely notice that your eyes frequently shift their focus.
There might be a piece of code you’re searching for. A zombie may be lurking in the virtual distance. Or perhaps you’re scrolling through social media posts to find the ones you’re actually interested in reading.
In addition, ambient lighting and screen contrast add to the demands on your eyes.
The pupils of the eyes tend to contract and become strained when focusing on something that is close to them, such as a screen, smartphone, or book. When focusing on something that is farther away, however, the pupils tend to relax.
Infrequent blinking, shifting focus, glare, contrast, glare, and closeness are among the factors that can contribute to digital eye strain. Although blue light can irritate your eyes after a long day on a computer, that does not necessarily mean your eyes are the real culprit. Maybe you just need to take some time to relax.
Can Blue Light Glasses Help You?
What does it say about the effectiveness of blue light glasses if we aren’t confident that blue light actually damages your eyes?
They are not harmful or bad for your eyes, but how do they work? Blue light blocking glasses contain special lenses that filter out blue light and allow other types of light to pass through.
It is generally believed that blue light glasses are used to reduce digital eye strain and improve sleep quality by shielding the eyes from high-energy blue wavelengths. Since blue light glasses work by shielding the eyes from high-energy blue wavelengths, there is a reduced risk of eye strain from extended exposure for those who are sensitive.
Following your understanding of blue light glasses, let’s discuss their effectiveness.
Blue light glasses and the science behind them
According to a study published in February of 2021, blue light lenses do not appear to alleviate the symptoms of digital eye strain. A two-hour computer task was given to 120 individuals who were experiencing digital eye strain symptoms. All participants were randomly given either clear (placebo) glasses or blue blockers, but were misled into believing that they were wearing blue blockers.
A significant difference was not observed after two hours in the feedback given by each group. Of greater significance was the fact that there was no difference between the two groups on the eye strain symptom score. In summary, the blue light glasses did not appear to have any effect.
There are serious doubts about the effectiveness of blue light-blocking glasses when this study is taken into account, as well as the fact that blue light may not even be the primary cause of your digital eye strain.
Research in progress and mixed reviews
One-third of 80 computer users in a 2017 study reported that they had experienced benefits after one month of wearing glasses coated with blue-blocking coatings.
A blue light glasses manufacturer funded this study.
In addition, there are other studies underway, like the one described below, which intends to examine the effectiveness of blue light lenses from a more detailed perspective.
The impact of blue light glasses on sleep quality
Many people claim that wearing blue blockers in the evenings helps them sleep better, although the American Academy of Ophthalmology does not state that blue light is harmful to the eyes.
In some cases, blue light blocking lenses may produce benefits regarding sleep, either by reducing harsh stimulation before bedtime or by reducing the amount of time spent awake. Let’s take a closer look at those studies.
Bipolar patients’ sleep quality was improved by blue blockers
20 patients who were hospitalized with bipolar disorder during a manic state were randomized to receive blue blocking glasses for 7 days, with some wearing clear glasses and others wearing clear glasses for the duration of the study. It was observed that the blue blocker group experienced significantly better sleep efficiency after 5 nights and decreased wakefulness after waking up.
Despite the small sample size of the study and no baseline data being collected before the study, these findings suggest that blue blocking glasses may aid in the sleep of hospitalized manic patients.
Athletes were able to fall asleep faster with blue blockers
An investigation published in 2019 involved 15 healthy athletes involuntarily wearing either blue blocking or transparent eye glasses for 3 hours prior to going to sleep. Their sleep was monitored for 9 consecutive nights, and they were provided with a routine that they were instructed to adhere to.
In spite of the fact that blocking the short-wavelength blue light was “mainly effective” in reducing the time it took them to get to sleep, the total amount of time they slept or their waking up time were not impacted.
Healthy adults may be adversely affected by blue light
There was a small study conducted in 2011 in which a few healthy adults’ nighttime melatonin levels were measured under varying conditions. Blindfolding for two hours was followed by exposure to blue LED lamps and white fluorescent lamps of various irradiances followed by a further 90 minute blindfolding period. Some blue light irradiances were found to significantly suppress melatonin concentrations in this study, however actual sleep quality was not assessed.
In theory, blue blockers may be useful for helping you sleep better at night since evidence suggests that blue light suppresses melatonin levels significantly. Nonetheless, this does not mean that you should rely solely on them for the prevention of eye strain, especially when there are other more reliable methods.
One study published in 2019 found that blue light filtering glasses provided subjectively better sleep when worn at night, although the results of objective measurements could not support this conclusion.
Keeping Your Eyes Safe From Potentially Harmful Light
It is unlikely that blue light glasses will help if you are experiencing headache, eye strain, or dryness. Many of these symptoms are the result of photophobia, or an abnormal sensitivity to light. If you are among these individuals, you need light sensitivity glasses that filter more than blue light. Those who wear light sensitivity glasses receive lenses that are specifically designed to help them manage the impact of all harmful light, which includes more than just blue light.
Light Sensitivity Glasses: Why Should I Wear Them?
In recent years, blue light has become the talk of the town, which is attributed to generic blue light glasses manufacturers. Since blue light has become a popular topic, many people are willing to purchase blue-blocking or filtering sunglasses. However, they are not necessarily receiving the benefits they expect. The reason is that blue light is not the only problem.
It has been shown in studies that green light may actually be soothing to people who suffer from migraines and light sensitivity. In addition, amber and red light can also be problematic.
Researchers conducted an experiment in 2016 in which patients were placed in a dark room and exposed to different colors of light during a migraine attack. In their study, they discovered that white light (which encompasses all light waves), blue light, amber light, and red light were all associated with an increase in migraine headache intensity. However, a narrow band of green light was found to be soothing during an attack.
The purpose of this study was to show that migraine sufferers might want to reduce their exposure to blue light. However, it offers no information regarding eye damage or even eye strain, and only examined migraine sufferers.
This lens is patented and has been clinically demonstrated to be effective for migraine and light sensitivity in glasses made by Axon Optics. The lenses are available in prescription as well as non-prescription and are ideal for indoor or outdoor use. They absorb up to 97% of the harmful blue, amber, and red light while allowing over 70% of the soothing green light through.
In an independent, randomized, double-blind, placebo-controlled study, the Avulux lens, a precision optical filter, demonstrated its efficacy. According to the results of the latest scientific research, Avulux lenses have both clinical and statistical significance when compared to placebo in migraine sufferers with episodic episodes. A migraine light sensitivity optical lens designed for this purpose is a first for the industry.
There you have it. If you are sensitive to light, Avulux lenses are a better alternative to blue light blocking eyeglasses. These three simple steps will help you lower your risk of developing eye strain even if you do not have a particularly sensitive eye.
Why don’t you take a break?
The simple act of giving your eyes a short break now and then can reduce eye strain considerably. As an additional reason to take a break, experts recommend the 20-20-20 rule. By doing this, you can relax your eyes and give them a much needed “time out” every 20 minutes. It can be done by focusing your eyes on something 20 feet away for 20 seconds.
Make use of artificial tears
When it comes to your eyes, a little lubrication can go a long way to preventing irritation and dryness.
Maintain a proper sitting position
It is important to be aware that the close proximity of your screen to your eyes can contribute to eye strain. You may also find it helpful to position your chair or desk to face slightly downward, so that you can look at your screen slightly downward. Try sitting further away from your computer. Aim for about 25 inches, or arm’s length.
You have probably been warned about slouching as a teenager by your parents. Poor posture can cause neck, back, and shoulder pain. You should always stand straight and look at your computer screen with your eyes, not your head or neck. A few backward shoulder rolls and periodic stretches might also be helpful.
When watching television, should I wear blue light glasses?
Watching television during the day or during the night requires wearing blue-light filtering glasses. The harmful wavelengths emitted by the screen must be protected from the harmful wavelengths when you wear blue light glasses when watching your favorite shows. As well as smartphones, tablets, television screens, LEDs, and fluorescent lights, blue light glasses can also be worn with artificial sources of blue light.
Is it necessary to wear blue light glasses when watching television?
It is important to understand why we should protect ourselves from blue light before answering the question, “should I wear blue light glasses when watching TV?”.
What are the problems associated with blue light?
Our lives have become increasingly reliant on artificial light sources since the 1980s. A recent survey indicates that the average person spends nearly 7 hours per day in front of a computer, laptop or mobile phone.
Our lives have become increasingly reliant on artificial light sources. A recent survey shows that the average individual spends almost seven hours a day in front of screens! Whether this is on a computer, laptop, or mobile device while scrolling.
The effects of excessive screen time include:
The obesity epidemic,
Problems with sleep,
Deterioration of mental health,
Diseases of the eyes;
Symptoms of migraine
It is believed that part of the problem lies in the content that we see on the Internet. For example, viewing perfect people on social media may lead teens to feel inferior as they compare themselves.
As for the second issue, it relates to the technology involved – blue light is being emitted to an excessive degree by these devices.
Like the sun, light consists of seven different colors, which make up the rainbow. A healthy light emits all of these colors equally.
In contrast, screens and LEDs excessively emit blue light (wavelengths from 380nm to 500nm). It is known that blue light is detrimental to the eyes because it causes eye aches, headaches, and strained eyes after using screens too long. The culprits here are blue wavelengths. The smaller wavelengths of blue light cause the discomfort because they carry concentrated energy.
The long-term effects of blue light exposure include retinal damage and age-related macular degeneration.
The phenomenon of blue light is not restricted to screens. Artificial light sources are constantly present around us – from LEDs in our homes to fluorescent street lights, which emit blue light as well.
It is important to remember that not all blue light is harmful! Our body requires a certain amount of blue light to keep us awake during the day and regulate our sleep-wake cycle. The sun naturally provides this blue light. Therefore, blue light glasses must work in harmony with your body and allow the amount of blue light that your body naturally receives to pass through. Therefore, artificial blue light is the culprit here!
When watching television, how will blue light glasses benefit you?
With blue light glasses, harmful blue light wavelengths are filtered and a balanced spectrum is delivered to the eye. By filtering the wavelengths using a special pigment, they ensure that you do not experience headaches or eye strain when using screens for extended periods of time.
You can use a quality pair of blue light glasses to reduce the exposure of blue light, but they are not a substitute for regular eye care, and they will not be effective if you want to reduce digital eye strain as well. Practicing good habits, taking frequent breaks, and wearing glasses with lenses specifically designed to reduce light sensitivity and migraines will help reduce digital eye strain.