BLUE LIGHT GLASSES
WHAT IS BLUE LIGHT?
Blue light is contained in the sunlight, just like red, orange, yellow, and green light. All these colors have many shades and different levels of energy. Long wavelengths contain less energy, short wavelengths have higher energy. Blue light has shorter wavelengths and more energy than red, orange, yellow, and green lights. When combined together they form “white light” or what we call sunlight.
Blue light is the last kind of light visible. Higher energy creates UV or ultraviolet, which is invisible radiation. UV has benefits and risks, for example, it is a good source of vitamin D but too much exposure can create painful sunburns and even skin cancer.
FACTS ABOUT BLUE LIGHT
Blue light is everywhere. It found naturally in sunlight, which is the main source of it. Blue light is also man-made. TV screens, computers, smartphones, and other digital devices all contain a significant quantity of blue light. As we spend so much time in front of screens, blue light and its long term effects have become an ongoing concern for health specialists.
The eye is not very good at blocking the visible blue light. Almost all blue light passes through the cornea and lens (front of the eye) to reach the retina (back of the eye).
The blue light at the end of the visible light spectrum is what creates the blue sky. This is because high energy light rays scatter more easily than other visible lights. On the other hand, the eye is very effective to block UV. Sunglasses are still highly recommended to block 100% of UV.
Because the eye does not block blue light to reach the retina, it creates changes that are linked to macular degeneration. Macular degeneration can lead to vision loss.
BLUE LIGHT GLASSES
Staring at screens often creates eye strains. This is because staring at screens is staring at the blue light, which is a high energy light. It can cause blurry vision, headaches, and fatigue. Digital eye stains make it harder to focus. To help filter blue light and avoid digital eye strain it is recommended to wear lenses with wavelengths lower than 450 nm because they increase contrast. Blue light glasses are specially designed to filter blue light and avoid eye strain.
BENEFITS OF BLUE LIGHT GLASSES
Blue light glasses help reduce fatigue, and symptoms associated with digital eye strains. By relieving discomfort and enhancing focus, blue light glasses help increase productivity!
Staring at screens before sleeping makes it harder to fall asleep and can cause restless sleep. Blue light glasses reduce the effects of blue light and can help you fall asleep, and have a better night.
Blue light can damage your retina and cause you to get macular degeneration, which is the leading cause of blindness in the U.S. Wearing blue light glasses regularly can help reduce this risk.