Beyond the Blue: How Blue Light Filtering Lenses Work!
Updated: Nov 7
Hey, let me ask you something - have you ever struggled to fall asleep after a long day of scrolling through your phone or working on your computer? If so, you might be experiencing the effects of blue light exposure. But don't worry, there's a simple solution that can help - blue light filtering lenses.
In this article, we'll talk about how blue light filtering (BLF) lenses work, their benefits, and why they're a must-have for anyone who spends a lot of time in front of screens. So sit back, relax, and learn about the world of BLF lenses.
What is Blue Light and why is it important?
Do you know that sunlight is made up of different colours that we can see? These colours are called the 'visible spectrum'. Think of it like a rainbow - each colour represents a different part of the spectrum.
Our eyes are equiped with structures to filter the damaging light from sunrays, especially ultraviolet rays. UVA and UVB are selectively filtered from the rays that reach the light-sensitive area of our eyes by cornea and lens. As we age, this ability reduces.
Blue light is one of the colours in the spectrum, and it's the colour that makes the sky look blue during the day. Blue light is abunduntly present in natural sunlight, more than the screens we use, however, there has been major concern over the exposure of blue light from digital screens and devices.
Typically, blue light is a type of high-energy visible (HEV) light that has a wavelength of between 400-500 nanometers. Now, when we look at screens on our phones or computers, they also emit blue light.
While blue light is important for regulating our circadian rhythms and can have positive effects on our mood and cognitive performance, as published by a study published in Molecular Biology. They found that prolonged exposure to this light from artificial sources can have negative effects on our eyes and overall health. This light has far reaching effects on our sleep as well.
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