Prolonged use of digital devices is now a very common habit today, an increasingly digital world where tablets, computers, smartphones, TVs, LCD and LED screens can cause us visual “problems” because they are blue light sources.

Blue light is naturally present in the sun and artificially emitted by digital devices and energy-efficient lighting systems, blue light has a short wavelength. Close to ultraviolet rays, its higher frequency and energy make it dangerous for eye health and general well-being.

Being a diffused light, it causes blur, reducing the contrast of the images.

Smartphones and tablets emit up to 40% more, and with their spread also the negative effects on the well-being of sight grow.

Being bombarded with blue light involves various symptoms, such as:

redness and eye irritation

dry eyes



blurred vision


It is important to recognize that we spend much more time looking “very close” than in the past. In addition, our cornea is hydrated less frequently by the tear fluid, since when we stare at a digital display it is natural to blink less often.

In low light conditions, the human eye switches from sensitivity to green to that for the high energy spectrum of blue. It follows that we perceive the blue light more intensely and therefore we can experience a feeling of greater glare.

This effect will be well known to those who, while driving, have been blinded by the driving lights of vehicles coming in the opposite direction, in particular those with modern LED or xenon headlights.

Glasses lenses with a blue light filter can ensure a more comfortable vision in these situations.
Furthermore, with ‘blue blocker’ lenses, a better viewing comfort is achieved for anyone who wants protection from blue light during indoor activities, such as that in front of a computer without having to give up the beneficial effects of this.

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