Blue light is everywhere, the largest being a natural source, sunlight. There are many other sources including: fluorescent light, compact fluorescent light bulbs, LED light, flat screen LED televisions, computer screens, smartphones, and tablet screens. When we are exposed to artificial blue light at night, we become alert and have trouble sleeping. The artificial blue light exposure is very small compared to the amount of exposure from the sun. However, the concern from blue light stems from the proximity of the screens to the eyes and the length of time spent on them. It is also important to consider that children’s eyes are still developing and their eyes absorb more blue light than adults looking at the same screen.
Natural light is made from red, orange, yellow, green, blue, indigo and violet light. The sunlight that we see is a combination of all the colors and it is white. Each color has different energies and wavelengths. Warm colors, on the red end of the spectrum have longer wavelengths and less energy. Cool colors on the blue end of the spectrum have shorter wavelengths and more energy. When we see white light, it has a large amount of the blue spectrum, which exposes our eyes to the shorter wavelengths and higher energy.
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When your child uses digital screens, they experience glare that is emitted. Glare is also a common cause of digital eye strain or computer vision syndrome. Our glasses contain an anti-glare coating, that helps to eliminate the glare. The coating allows more light in and less of the artificial feedback, which helps your child see more clearly. Glare is even more prominent at night, which means when your child is looking at screens in the dark, they are putting more stress on their eyes. Exigo Optical’s glasses provide your child with clearer vision and less stress on their eyes.
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The CDC reports that children now spend nearly 9 hours a day on digital devices.  Schools are increasing the use of electronic textbooks, which means your child is looking at their digital device for a large amount of the time that they are at school. Children then come home and watch TV or play on their cell phones, meaning more screen time and even more blue light exposure. Children are still developing and strengthening the muscles in their eyes, so the stress placed on their eyes from blue light is can make them feel even more uncomfortable as they are more susceptible to blue light.
Computer Vision Syndrome symptoms include:
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Recent medical studies discovered that too much blue light exposure can damage cells in the retina. This damage resembles that of macular degeneration. Macular degeneration can lead to permanent vision loss. The studies show that the exposure causes damage in the cells that are responsible for color vision. Studies about blue light and a link to macular degeneration are ongoing.
Macular Degeneration is the leading cause of vision loss, affecting more than 10 million Americans – more than cataracts and glaucoma combined.
At present, Macular Degeneration is considered an incurable eye disease.
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