Between smartphones , tablets , computers and television , we spend more and more time in front of our screens, on average 6 to 10 hours per day . It is a phenomenon accentuated by technological advances, dematerialization, social networks and other digital tools. Per day, we would use on average up to 4 screens . However, these screens emit light that is harmful to our eyes!


Current artificial lighting emits blue-violet light which is toxic . INSERM researchers have in fact established the following connection: " We already knew that blue light is toxic to the retina in cases of AMD. This is explained by the accumulation of a compound which absorbs blue light, lipofuscin, which causes the death of pigment epithelial cells.

Apart from AMD, age also affects other processes: photo-activation is no longer compensated by retinal antioxidants. The cells of the retina degenerate and at the same time cause the death of the associated photoreceptors (source: Essilor and Wing&al IOVS 1978).

Our body reflects this harmfulness very well: 75% of screen users complain of discomfort, pain, blurred vision, stinging in the eyes and glare. This high-intensity light – which is 15 times more harmful to the retina than other radiation emitted in the visible spectrum – causes increased visual stress. This causes various ailments such as dry eye syndrome, eye irritation, headaches and loss of attention, but also color aberrations, blurred vision and loss of contrast.

Blue light: disruptor of the circadian cycle

Excess blue light sends a signal to the brain interfering in the production of melatonin , thus delaying sleep and altering the biological clock . This is why it is important not to look at screens before bed. Numerous studies have demonstrated the correlation between lack of sleep and serious illnesses such as cancer, diabetes, obesity and heart disease.


Anti-blue light computer glasses

Reading glasses for screens relieve the effort you make to see clearly at close range. They make it easier to read small characters on screens and improve contrast. At the same time, they prevent visual fatigue and reduce it. Combined with anti-blue light technologies , computer glasses protect you from this harmful blue light.

Protecting your eyes and improving visual comfort: do anti-blue light glasses have an impact?

Anti-blue light glasses provide many benefits :

  • Reduction of harmful blue light reaching the retina , while allowing the passage of light essential for the proper functioning of the eye and nervous system
  • Contrast enhancement
  • Reduced visual fatigue
  • Reduced risks of premature eye aging, cataracts , early AMD , etc.
  • Improved quality of sleep, especially if you use your eyes before falling asleep
Which anti-blue light glasses to choose?

It is essential to have a pair of glasses that blocks these harmful wavelengths while allowing the blue-turquoise light essential for the proper functioning of the circadian rhythm (biological clock) and the pupillary reflex.

Be careful, not all glasses take this into account! Three solutions exist:

  • The anti-blue light filter : it is a surface anti-reflective treatment which will reduce the level of blue light entering the eye but which has the disadvantage of a blue-violet reflection (more pronounced than with a classic anti-reflective treatment). Visible anti-reflective which may be considered unsightly by those around you. The perceived image is slightly tarnished, which, of course, increases your comfort on a screen but modifies the perception of colors, not recommended for computer graphics designers, professionals requiring good vision of colors on the screen...
  • Anti-blue light material : this is a plastic material, a monomer which effectively filters harmful blue light without any visual or aesthetic compensation.
  • The combination of an anti-reflective filter and this anti-blue light monomer ensures optimal protection against this wavelength range.

To improve your comfort on the computer and protect your eyes, your Varionet online optician introduces you to anti-blue light glasses equipped with Cool Blue + lenses.

Cool Blue + glass combines protection against scratches, exceptional transparency , ease of cleaning and maximum absorption of blue light thanks to its material. And for even more comfort, it is available with Hightech multi-layer anti-reflective . In addition to protecting your eyes from premature aging , it will reduce your visual fatigue and even allow you to sleep better.

Get advice on the best anti-blue light lenses according to your needs from our Varionet opticians.