Protecting yourself from the blue light of the screens
- The blue light of the screens
- Blue light source
- In short, our daily life is full of blue light.
- In the meantime, how do we protect ourselves from it?
- When you renew your glasses, you can order this filter.
- My optician's opinion
- You may be interested:
The blue light of the screens
Blue light is present everywhere in our lives, especially when we are surrounded by screens and LEDs. So how can we protect ourselves from it? Here is the advice of optician Carole Riehl.
Blue light source
It is present : in a natural way: the blue light is emitted by the sun.
This allows our body to differentiate between day and night. - Artificially: LEDs are all sources of blue light.
LEDs are present: on your computer screens, on your smartphones, on light bulbs, on LED TV screens.
In short, our daily life is full of blue light.
For 4 years, ESSILOR and the Vision Institute have been studying the spectrum of light (link to the article formalizing the research of these 2 entities).
They found that a high dose of blue light (with wavelengths between 415 and 455 nm) is harmful to the retina.
This can range from eye strain and insomnia, to dry or watery eyes, to blurred vision. But it is an aggravating factor for AMD (Age-Related Macular Degeneration).
In any case, if you have any of these symptoms, consult your ophthalmologist or ask your optician for advice.
More recently, last July, the results of an American study demonstrating the harmfulness of blue light appeared in the journal Nature (article link).
Because in fact, according to his experiments, the cells of the retina self-destruct when they receive the blue light received in large quantities.
A ray of hope anyway: these same researchers have found a natural antioxidant molecule (α-tocopherol) that would prevent the death of our retinal cells.
But this is ineffective at the moment for the elderly (those most affected by AMD). Patience, research is being done to achieve greater effectiveness.
In the meantime, how do we protect ourselves from it?
There are several solutions:
1. Less time in front of the screens.
You can start a screen detox by reducing the time you spend in front of the Internet, TV and other LED screens. This can be a benefit in every way.
2. Treating the blue light in your glasses.
When you renew your glasses, you can order this filter.
It is included with the hardened (reduces scratches) and anti-reflective coating. And all glassmakers offer it on their lenses.
It is important to know that this treatment has a slight bluish reflection and an imperceptible yellow tint.
However, visible to any artist. - Do not hesitate to ask for it also for your sunglasses.
The blue light filter to be installed on your computer.
There is the possibility to easily order a flexible filter made to measure or standard. This is easily installed on your computer screens. - The same principle also exists for smart phones.
In general, all these devices filter up to 30% maximum. Beyond that, the filter is yellow. Who wants to wear yellow glasses? (meditating)
My optician's opinion
Economically, I would tell you to reduce your exposure to screens, but this is not necessarily possible for everyone.
So, as a prevention, I advise you to filter this blue light as soon as you can and when you renew your appliances (light bulbs, glasses, TV etc... ). And don't forget to wear sunglasses when the weather is good, even in winter.