Blue light is actually everywhere. Light from the sun travels through the atmosphere. The shorter, high energy blue wavelengths collide with the air molecules causing blue light to scatter everywhere. This is what makes the sky look the colour blue. The advancement in digital screen technology has moved forward considerably over time, in particular the use of LED back-light technology. These LEDs emit very strong and harmful blue light waves. Mobile phones, computers, tablets and flat-screen televisions are just among a few of the devices that use this technology.
So how is it harmful?
Blue light has a very short wavelength, and so produces a higher amount of energy. Human eyes’ natural filters do not provide sufficient protection against blue light rays and research states that, over time, exposure to the blue end of the light spectrum could cause serious long-term damage to not just our eyes, but also our sleep patterns, increasing our risk of certain types of cancers, and putting us at greater risk of getting diabetes, heart disease and suffering from obesity.
What is the solution?
One of the best solutions for combating the effects of Blue Light are blue light blocking glasses.
They use special orange coloured lenses that block out the harmful blue light while letting in all other light.