What you should know about the Blue light from your digital devices

What you should know about the Blue light from your digital devices

Struggling to unwind and fall asleep at night? Blue light being omitted from the ever increasing amount of technology in your household may be to blame.

Before we explain how blue light blocking glasses may be the solution to your issues with sleep, a brief explanation of blue light may be helpful.

Blue Light is everywhere. It ranges from 380 to 500mm.

Blue Light is everywhere. It ranges from 380 to 500mm.

Visible light is seen as the colours of the rainbow: red, orange, yellow, green, blue, indigo and violet. Blue light has the shortest wavelength of these colours, therefore produces the most energy.

Before the creation of artificial light, the sun was the primary source of blue light.

As the sun set and the environment darkened, our bodies naturally began to relax and unwind. Tasks were done by fire or candle light before people retired to sleep relatively early on in the evening. Our bodies were in sync with the rising and falling of the sun. In our current age, blue light comes from the sun and other man made sources such as fluorescent and LED lightingflat screen televisions, computers, smart phones and electronic notebooks.

Blue Light is everywhere. It ranges from 380 to 500mm. HEV light is what makes the sky look blue and our eyes are not great at blocking blue light.

Blue light can disrupt sleep

Blue light can disrupt sleep

There are some benefits with blue light. Have you ever turned the lights on to wake you up when you have an early start? This is because blue light boosts alertness and dissipates any residual grogginess.

Blue light also boosts memory, cognitive function and mood. This is why sufferers of Seasonal Affective Disorder (SAD) are encouraged to utilise light therapy during winter months.

not that good aspect of the blue light from computers and digital devices is that it overwhelms melatonin creation (the hormone that induces your sleep) which can disrupt sleep.

The sun no longer dictates the daily routine and we can stay awake using man made light. Social media is highly addictive keeping you glued to your phone scrolling through Instagram, Facebook, SnapChat and Twitter. This coupled by reduced melatonin due to blue light means your natural Circadian rhythm (or body clock) may be impaired.

Digital Eyestrain Syndrome

Digital Eyestrain Syndrome

Another drawback of blue light is that it can cause Digital Eyestrain Syndrome.


Symptoms of this include blurry vision, difficulty focusing, dry and irritated eyes, neck pain, back pain and headaches .

These symptoms obviously impact on the daily functioning of the sufferer.

If you believe that blue light may be impacting on your health, an obvious solution would be to limit your exposure to it. You could stop using all technology a few hours, the few hours without exposure to the blue light would give your body time to relax.

If you aren't able to limit your exposure and are constantly using your phone for texting, emailing and web browsing, try using blue light blocking glasses.

Blue light blockers prevent blue light from reaching your eye which could help prevent eye strain.

WOMAN

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