You have probably read everything about the correlation between insomnia and the digital blue light emitted by phones, computer screens and televisions. And while it is a good idea to limit exposure to blue light at night, you should limit it as much as possible throughout the day. To do this, you can take blue light glasses, as brought out by Swanwick.
What is blue light?
For those who are not familiar, blue light is exactly what it sounds like. It is the blue section of the visible light spectrum between 380 nm and 500 nm. During the day it is good to be exposed to natural blue light. It helps tell your brain that it’s time to be awake, increasing awareness, response times, and mood. However, numerous studies have shown that nighttime exposure to blue light suppresses secretion of melatonin, a hormone that signals your brain that it̵
This can affect your daily rhythm, the body’s natural sleep-wake cycle, and lead to occasional and sometimes chronic insomnia. But even outside of the nighttime, there are indications that excessive exposure to blue light, especially on screens, may damage the eyes and accelerate age-related macular degeneration.
Needless to say, people are exposed to more blue light than ever before. According to a recent survey, the average American spends 42 percent of his waxing hours looking at a screen. That’s about six hours and 43 minutes when you look at phones, tablets, laptops, and TVs every day. And 79 percent of respondents said their screen time has increased in the past five years.
How blue light glasses work
Unfortunately, for most people, reducing screen time significantly is probably not an option, but blue light glasses can help block the light from your eyes. Swanwick Day Swannies are specially designed to be worn every time you use devices with screens in daylight. Since we all need some blue light to regulate our sleep-wake cycle, day swannies don’t block all blue light. Instead, they only block 42 to 80 percent of blue light between 400 and 450 nm and 22 to 42 percent of blue light between 450 and 500 nm.
Day Swannies is currently available in eight different models with different sizes and color options, so you’re guaranteed to find a pair that fits your personal style. This includes models that have been specially developed for children, for reading and for recipes. Regardless of the model, all Day Swannies have CR-39 lenses, ie they are made from a prescription material that enables maximum visual clarity. And all styles block 100 percent of UV light. More details are available here.
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