Have you ever tried researching blue light on the Internet?
Are you left confused by all the articles claiming different things?
? Do you want to check out our debunked myths and confirmed facts about blue light?
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Are you wondering if you should be worried or if it’s all just another marketing ploy from big corporations trying to sell you stuff?
Well look no further－here are 7 debunked myths and 5 truths about blue light you should consider worrying about.
The harmful effects of blue light became prominent after the introduction of digital devices like laptops, smartphones and TVs.
But blue light is very much natural. Just look up at the sky!
What you may now consider as something bad and harmful to your health is just regular light that is, well, blue.
The Sun is actually our main source of blue light.
The problem, however, is that introducing too much blue light at night confuses our biological clock and can cause many problems with our eyesight in the long run.
As you already learned humans have been experiencing blue light long, long before the invention of computers.
Natural blue light helps synchronize our biological clock－i.e tell us when it’s day so we should be awake and notify us that we should be going to sleep at night.
This is why blue light from the monitor can cause sleeplessness – it confuses our organism and it doesn’t know it’s already night. For more information check out the “How blue light destroyed our sleep?” article.
That confusion is not always a bad thing though.
Many people who are constantly tired or suffering from diseases that cause sleep episodes can benefit from blue light exposure.
Studies have shown that with the right amount of blue light productivity increases.
Blue light treatments can also help with different kinds of harmful bacteria that eat away your teeth or cause gastritis for example.
It can also help with different kinds of skin problems like red spots for example.
Blue light therapy can also help treat seasonal affective disorder (SAD) or help people with dementia reduce their sleeping problems or depression.
Now if you know a thing or two about the light spectrum you should know that UV light is much more energetic and with a shorter wavelength than blue light－therefore, it should be much more dangerous.
However, there is something important you’re forgetting.
The ozone layer that we so adamantly want to protect blocks more than 80% of all UV light coming from the Sun.
Don’t misunderstand UV radiation is still harmful and can cause things cataract and pterygium, however, we are much more exposed to blue light in our everyday lives and that is the main reason why to us specifically blue light is more dangerous.
It is true that our eye does a very good job when it comes to protection from UV light.
But the cornea and lens of the eye can’t block the blue light as it does with the UV light.
Blue light easily reaches our retina (which by the way is super sensitive) and causes a number of damages like dry and red eyes.
So why do we wear sunglasses to protect ourselves from UV light but do nothing about our exposure to blue light?
Since the invention of digital devices, our exposure to harmful blue light has skyrocketed.
Laptops, smartphones, TVs, LED lights are all around us.
And overtime prolonged exposure to harmful blue light can cause various diseases like cataracts, macular degeneration, blurred vision, muscle strain and even permanent blindness.
Blue light can also have a negative effect on memory, sleep cycles and hormonal balance. For more information see “How monitors destroyed our eyes“.
All of this can also lead to various mental health issues like depression, seasonal affective disorder and anxiety.
Too much blue light suppresses the production of melatonin which is essential for knowing when it’s time to sleep.
Like we’ve already mentioned seeing the bright blue sky during the day shows that you should be awake.
But if you expose yourself to too much blue light at night, that’s basically telling your body it’s always day, I should never sleep.
And that is definitely not good for you.
Not enough sleep can be detrimental not only to your physical health but your mental health and productivity as well.
Learn more about how to sleep better with our care tips: “The 8-hour myth: Sleep better and live longer with these 7 healthy tips” and “10 Tips for falling asleep quickly“.
You’ve probably had this idea－I’ll just tinker with my computer settings a little bit, lower my brightness or saturation, change my wallpaper to something darker and that should be enough.
Well, that’s not completely true. There’s much more than just blue light that can be harmful to your eyes like PWM, flickering, blurred and small fonts, etc.
The best way to take all precautions on your devices is to use computer glasses, screen overlay or install software that deals automatically with all the negative effects of blue light.
It’s an absolute myth that when you start wearing glasses you’ll begin to rely on them and that will cause your eyesight to worsen.
If you choose the right prescription for your problems and wear your glasses for the recommended by a professional amount of time you definitely won’t experience any decrease in vision.
Or if you do it won’t be because of your glasses.
However wearing inappropriate diopters or too heavy or embellished frames can cause problems with eyesight and strain to your nose and ears, and even cause headaches.
In fact, wearing fitting glasses can ease your eyes and let them relax and work properly.
If you already have dioptric glasses there are places that can get you a protective computer filter for them.
If you don’t, however, you can get specialized computer glasses that can very well be used as an accessory in your everyday life.
Some blue light protection glasses also block harmful UV light as well or work like sunglasses outside.
There are many different options you can choose from and find the one that’s best for you and your needs.
You’re probably thinking－well I’ve never worn glasses in my life, if I start now it will be super annoying and won’t help me at all.
Well, let me tell you this as a person who’s worn glasses for almost 10 years － there’s nothing like washing your face with your glasses still on because you forgot they were on your face.
What I’m trying to say is don’t be discouraged.
Many companies and optometrists nowadays offer personalized eyewear that will fit your head like a glove, or well, a hat.
And be sure that once you start wearing glasses and working with them you’ll forget all about them very soon.
Not only that but all that’s left will be the helpful effects they’ll have on your vision.
Today there are so many ways to reduce blue light on all of your devices.
You can choose between glasses, screen protectors, different programs and apps that filter blue light.
You can try and see which option works best for you.
For more tips on how to reduce eye strain, you can check out “11 ways we strain our eyes with computers”.
You can also try Iris – a software for eye protection from blue light that can ease your life in a second.
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Don’t be fooled though.
No matter how many of our preventing tips you’ve followed you can’t just become invincible and immortal.
That’s mainly because many eye related issues and diseases are due to old age, genetic reasons, diabetes and various things that cannot be accounted for in your life.
That doesn’t mean that you should abandon all hope though. If you properly protect yourself from the preventable negative effects of blue light you can live a long happy life and prosper.
2 thoughts on “Blue light – learn the fact and fiction behind this modern threat”
For people with Seasonal Effective Disorder (SAD), studies published at the National Institute of Health (not studies done by product manufacturers) indicate blue light therapy is effective for treating SAD. So if you start employing blue light therapy (30-60 minutes each morning) and at the same time start wearing blue light blocking computer glasses all day, wouldn’t the glasses potentially negate the beneficial effect of the blue light therapy since you are offsetting it by wearing the glasses all day?
Simply put, should people with SAD avoid wearing blue light blocking glasses during the darker months?