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Blue light filters: a new technology

Artificial lighting completely changed man’s lifestyle. It allowed him to lengthen his workdays and be more productive. But at what price? The light emitted by electronic devices has negatively impacted health. This is why blue light filters are shown as an efficient solution to counteract damage.

Next, we will talk about a solution: blue light filters. It is a technology that covers both the lenses of lenses and the screens of electronic devices.

What is a blue light filter?

Blue light filters are a configuration modality installed in the operating system of electronic devices and have the function of blocking blue light. It is activated by a simple adjustment. New smart devices even include new lights that make you sleep at night.

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Sometimes, these filters are activated automatically when they perceive that there is little external lighting. They are programmed to place the blue filter at night, that is, at the time when blue light is most affected.

At night, the blue spectrum lighting radiated by tablets, computers and smartphones inhibits melatonin. This is a hormone that controls the sleep cycle, causing insomnia and all the symptoms associated with said condition:

  • Irritability
  • Depression.
  • Fatigue.
  • Weakness.
  • Lack of cognition.
  • Sudden mood swings

The eyes also suffer when they receive light of this color. Consequently, anti-blue light glasses generate the same effect as digital filters. Only, instead of being attached to the device, the lens comes with a blue light blocking coating.

How do blue light filters work?

With the screen in blue light filter mode it transforms the color of the light to a tone close to sepia. The yellowish lighting waves neutralize the blue color coming from the LED lights responsible for illuminating the screens.

In fact, you can see the big difference that exists between the normal mode and the filter mode. After having spent a few hours watching the computer with blue light filters, the change to traditional one generates a particular effect

You will notice that the light from the screen reaches your eyes in a more powerful way. It could even cause glare. Blue light has a wavelength range that reaches between 400 and 495 nanometers.

In short, in a light capable of producing high levels of energy that go directly to the cells of the retina. This is why it is so important to protect your eyes with blue light glasses or digital filters.

Can they be used on lenses and screens?

Absolutely, blue light filters are available for both screens and lenses and could be combined for maximum protection. For those people who have ocular dysfunctions, it is best to purchase lenses.

Blue light glasses can be ordered formulated with the prescription of the eye doctor. In this way, the need for a background condition would be met while protecting the eye from blue radiation.


It should be noted that the blue light filter and blue filter glasses do not block it completely. For this reason, it is key to transform screen exposure habits to mitigate the effects of blue light:

  • Look away from the screen at intervals.
  • Do not use devices with LED light before sleeping.
  • Illuminate spaces with yellow light at night.
  • Do away with fluorescent lights.
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