Did you ever wonder the visible light that enlightens our days and nights, what is it? From where does it come? What is that source which can produce such a gigantic and innumerable energy rays?
You might be savvy that the sunlight encompasses a span of diverse-colored light patterns where each of them holds various extents of energy, conjointly known as electromagnetic particles or radiations.
I hope you all have seen or read about the light spectrum. Collectively, it is a combination of up to seven different colors that are Violet, Indigo, Blue, Green, Yellow, Orange, and Red. All of these grabs wavelengths between 380 and 700 nm (nanometers).
What is Blue Light?
Among all of these, the blue light comes with the shortest wavelength yet the highest energy. The blue light is designated as the visible light or HEV light (High energy visible) and ranges from 380 to 500 nm.
Natural Blue Light v. Artificial Blue Light
First off, you are needed to become clearer between the difference of what is natural blue light and artificial blue light.
Forasmuch, the sun is the pre-eminent source of blue light so, it is surrounded everywhere on the earth. In addition to that, it is the reason why the sky looks blue. When the blue light with shorter wavelength strikes with the air particles or molecules, it causes it to scatter everywhere. Every day, we confront natural blue light emitted by sunlight till sundown.
There were days when the sun was the only creator of blue light, and people depleted their nights in the darkness. After realizing the desperate need for the blue light to illuminate our evenings, we created artificial blue light through digital means. The potential sources of artificial blue lights are digital screens (including TVs, Smartphones, tablets, computers, laptops, and gaming operating systems), electronic devices, LED, and fluorescent lighting.
Is Blue light good or bad?
The main question that arises here is either blue light harmful or beneficial for us. There are two sides to it. Either you are intaking natural blue light or artificial?
The natural blue light has many benefits for us. In fact, the researches have proven that blue light has a critical role in regulating our Circadian rhythm. It means that natural light is somehow very essential for our physical, mental, and behavioral alertness and to improve our cognitive functions. Also, it substantially impacts on our mood swings. If we intake daylight up to some extent daily, it heavily hoists our mood. In other words, blue light is one of the very cheapest yet efficient energy sources to keep us active throughout the day.
Additionally, some of you may have heard about seasonal affective disorder or SAD. If you never have, SAD is typically known as a kind of depression that changes from season to season. Well, you would be surprised that light therapy is considered one of the most effective treatments for this kind of state.
Now, where the problem comes? It is significantly needed to determine how much natural and man-made blue light should reach to our retina. Luckily, we have two firewalls cornea and lens that prevents potential ultra-violet rays reaching to the most sensitive part of the eye – Retina. The doctors are perturbed about the increased blue light submission from digital devices might possibly damage the sensitive layers of the retina and cause the Macular Degeneration at a later stage.
A colossal of researches have made on what is blue light and how we can avoid the accessive blue light exposure in our daily lives. One of the most recommended ways is using blue light glasses, typically known as anti-blue light glasses or blue light filter glasses.
No one cay deny that the revolution in technology for a few years has changed everything in our lives and made everything easy for us, but every ease comes with its drawbacks. We all are aware that most of the electronic gadgets and appliances use LED back-lights in order to amplify the transparency and luminosity.
Since the ubiquitous use of electronic devices especially mobile phones, tablets, and computers, humans are exposed to blue light than ever before. Most of us usually spend most of their time in front of a digital screen that can seriously lead us to a medical stage – Eye Strain or CVS (computer vision syndrome). Consequentially, you can experience any of these: blurry vision, difficulty focusing, dry and irritated eyes, headaches, neck and back pain.
Avoiding Blue light exposure
Well, there is no other way to rollback blue light in your life aside from blue light eyewear. If you are a diehard user of digital gadgets, you must be using Bluray optical or computer glasses that would help you to block the blue light emitting from the electronic device.
If you disrelish the use of computer eyewear, you should keep your eyes at a distance from the computer screen and try to avoid continuously looking at the screen.
Another productive way to avoid blue light is by using blue light filter glasses and blue light filters, especially at night. They reduce light intensity coming from the device to block high brightness damaging your eye’s sensitive portion. Whenever you are using the electronic gadgets in full darkness, reducing the brightness to extremely low doesn’t work. For that, you can find a whirlpool of blue light filter applications on the internet.
In order to get the blue light filter glasses, you may visit your nearest optical stores or purchase them online. But it is recommended that before making any purchase, it would be great to visit your doctor first. Ask for his opinion regarding which type of blue light glasses best suits for you. After that, you can buy your blue light blocking eyewear either from an optical store or through online means.