As technology advances, the amount of blue light we are exposed to on a daily basis has increased exponentially. Blue light is a type of light that has a shorter wavelength than other types of light, meaning it has more energy. This energy can be beneficial in certain ways, but it can also be harmful if not regulated properly. In this article, we will uncover the truth behind blue light, its sources, its effects on our eyes, and how to protect ourselves from it.
What is Blue Light?
Blue light is a type of light that is found in both natural and artificial sources. It is part of the visible light spectrum and has a wavelength between 400 and 500 nanometers, which is shorter than other types of light. It is this shorter wavelength that gives it more energy than other types of light.
The most common natural source of blue light is the sun. Blue light is also emitted by fluorescent and LED lights, digital screens, and other electronic devices. While blue light has its benefits, it can also cause eye strain and other health issues if we are exposed to it for too long or at the wrong times.
Where Does Blue Light Come From?
Blue light is emitted from multiple sources, both natural and artificial. The most common natural source is the sun. It is estimated that about one-third of the visible light that reaches the Earth is blue light.
Blue light is also emitted from artificial sources such as LED and fluorescent lights, digital screens, and other electronic devices. The blue light emitted from these sources is often referred to as “high-energy visible light” (HEV), and can be more damaging than natural sources of blue light.
How Does Blue Light Affect Sleep
Research has shown that blue light can interfere with our body’s natural circadian rhythm, which is our body’s internal clock that regulates our sleep-wake cycle. Our eyes are particularly sensitive to blue light, which is why exposure to it during the evening can disrupt our sleep-wake cycle.
Studies have shown that exposure to blue light can suppress the production of melatonin, a hormone that helps to regulate our sleep-wake cycle. This can lead to difficulty falling asleep, poor quality sleep, and feeling tired during the day.
How to Protect Yourself from Blue Light
There are several ways to protect your eyes from blue light. One of the most effective ways is to limit your exposure to digital devices, specifically at night. You can also use blue light-blocking glasses, which can filter out some of the harmful blue light.
There are also several other measures you can take to reduce your exposure to blue light. These include reducing the brightness of your screens, taking regular breaks from screens, and wearing sunglasses outdoors.
Common Myths Surrounding Blue Light
There are several myths surrounding blue light and its effects on our eyes. One of the most common myths is that blue light from digital screens is more damaging than natural blue light from the sun. While blue light from digital screens is more intense than natural blue light, both can be damaging if not regulated properly.
Another common myth is that blue light blocking glasses are necessary to protect your eyes from blue light. While blue light blocking glasses can be beneficial, they are only necessary if you are spending long periods of time in front of digital screens.
Blue Light Blocking Glasses
Blue light blocking glasses are glasses that are designed to reduce the amount of blue light that reaches the eyes. They are usually coated with a special filter that absorbs the blue light and reduces the amount of light that reaches the eyes. Blue light blocking glasses can help to reduce the effects of digital eye strain and protect the eyes from the harmful effects of blue light.
Blue light blocking glasses are available in a variety of styles and shapes. They are usually tinted yellow or orange, which can be off-putting for some people. However, there are also clear blue light blocking glasses that can be worn without the yellow or orange tint.
Alternatives to Blue Light Blocking Glasses
Blue light blocking glasses are not the only way to protect your eyes from blue light. There are several other methods that can be used to protect your eyes from the harmful effects of blue light.
One of the most effective methods is to limit your exposure to digital screens. You can do this by taking regular breaks from screens, reducing the brightness of your screens, and avoiding screens before bed.
You can also reduce your exposure to blue light by using blue light filters on your devices. These filters are available on most modern devices and can help to reduce the amount of blue light that reaches your eyes.
Blue light is a type of light that has both beneficial and harmful effects. It is found in both natural and artificial sources, and can be damaging to our eyes if not regulated properly. To protect your eyes from the harmful effects of blue light, it is important to limit your exposure to digital screens, take regular breaks from screens, and wear blue light blocking glasses if necessary. By following these tips, you can help to protect your eyes from blue light and its damaging effects.