What is blue light?

Blue light is all around us. We mainly get it from sunlight, but there are also various man-made blue light sources, such as computers, tablets, phones, TVs , and other digital devices that emit high-intensity blue-violet light rays.

Blue light has a short wavelength, so its energy is very strong. The intensity of the light rays emitted by digital devices is much lower than that from sunlight, but the time we spend in front of screens and their effect on our eyes has an impact on our health. Especially when we are in front of screens in the evenings, when it is already dark outside, the effect of blue light on our body increases. The brighter the device screen, the more blue light it emits.

Additionally, artificial lighting during the dark hours of the day can affect a person's biological clock. Disrupting the rhythm can lead to poor sleep quality.

The effects of blue light

Each of us has unique eyes, so the effects of screens on our eyes may vary. Prolonged exposure to digital screens can lead to symptoms such as: Dry eyes, eye pain, headaches, dizziness, or difficulty falling asleep at night . These are just some of the signs that may indicate that there is too much blue light in your daily life.

Researchers at Harvard University also conducted an experiment on sleep quality, comparing the effects of blue and green light on the human body. The results revealed that blue light suppressed melatonin release twice as much as green light.

LED blue light

LED bulbs are a much more energy efficient solution, but they emit significantly more blue light than previous generations of bulbs. There are now several options for “warm” and “cool” light tones. It is important to remember that “warmer” light tones are less stressful on the eyes than “cool” ones.

How to protect yourself from blue light:

As we mentioned earlier, blue light is necessary for us, but too much of it can cause unpleasant side effects. Here are some of our recommendations to improve the quality of your daily well-being:

• When doing intensive computer work, use computer glasses to reduce eye strain.
• Avoid bright screens for two hours before bed. But if you are in front of screens, use computer glasses.
• A walk in the fresh air will improve sleep quality and overall well-being.
• Use “warmer” light bulbs for nightlights and evening lights.
• Regularly stretch and do eye exercises by looking at objects in the distance and then up close, repeating this exercise several times.
• Drink as much water as possible every day.