Blue light – between necessity and danger

Modern man is the digital man, always connected, always surrounded by intelligent devices.

Approximately 93% of adults use these devices for at least two hours a day, and more than 60% of these five or more hours a day. Just a few hours before the monitor, our eyes become tired, with symptoms including a general feeling of tiredness, headaches, blurred vision, or red, irritated or dry eyes.

Research has shown that blue light with a spectrum of 400 to 520 nm and a peak at 460 nm has a particularly important impact on the regulation of melatonin in the human body, a process that influences circadian rhythm and overall well-being.

There is evidence that long-term exposure to blue-violet light wavelengths below 460 nm, with a peak at 440 nm, contributes to photochemical damage to the retina, increasing the risk of macular degeneration (a phenomenon known as “light dangerous blue “). It has also been demonstrated that exposure to blue light before bedtime can cause sleep disturbances.

The source of this type of light are intelligent devices and some economic lighting systems. Think about yourself: how often do you use smarts screens, how often do you watch the TV, or how many hours do you work in front of your monitor or laptop?

What is to be done?

It is especially important to have adequate filtration of blue-violet light in accordance with its intensity. Filtering blue-violet light up to a wavelength of 440 nm results in a minor impact on circadian rhythm, while providing protection against macular degeneration.

The innovative treatments for BlueProtect glasses partially reflect the blue-violet light coming from artificial sources, preventing harmful light from getting into the eyes. These treatments reduce the transmission of dangerous blue lights, but maintain a level of transmission needed to regulate the circadian rhythm.