Blue Light and Technology

Blue Light and Technology

There is light everywhere we look; from sunlight to light emitting from our computer screens. Our eyes are able to protect themselves from some of that light, for example, UV rays. However, they do not have any defenses against blue light.

What is Blue Light?

Blue light are short, high electromagnetic energy waves. It has the shortest wavelength and the highest energy on the visible light spectrum.

Many day to day items emit blue light; sunlight, florescent and incandescent lightbulbs, and LED Lights. LED lights are included in all our computer screens, televisions, and mobile devices.

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Is Blue Light harmful?

The ultimate answer is yes, depending on how much you use it. However, not in the way you may think.

There has been studies conducted to see if blue light could damage our eye retinas, as blue light passes through the eye straight to the retina. However, they has not been enough conclusive evidence of any long term damage.

Nevertheless, these studies have shown that looking at screens for long periods of time can lead to digital eye strain. Our eyes tend to blink less while staring at a screen, which can cause dryness and more strain on our eyes.

Blue light can also affect our sleep cycles. Before artificial light became a necessity, our days were spent in natural sunlight, and our nights were spent in darkness. This helped our bodies to create melatonin, signaling our brain to slow down and become tired. This balanced our circadian rhythm (sleep cycle). Now that our nights are filled with artificial light, our bodies cannot create enough melatonin and we experience poor sleep.

The best time to be around blue light is during the day. This helps you to stay alert, helps your memory, and boots mood and energy.

Limiting Blue Light Exposure

If you would like to limit your exposure to blue light, here are a few recommendations:

20/20/20 strategy

This can help you refocus your eyes and reduce eye strain. The trick is to look at something 20 feet away for 20 seconds, and to do so every 20 minutes.

Keep your eyes moist

As a result of staring at a computer screen for long periods of time, you need to focus on blinking often.

Use eyedrops.

Adjust the blue light on your screen

  1. From the Start Menu, click on the “Settings” button
  2. Click on the “System” option
  3. Click on the “Display” option
  4. Click on the “Night Light Settings” option
  5. Click on “Turn on now” and adjust Temperature and Schedule settings

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