Blue light forms the short wavelength part of the visible electromagnetic spectrum and generally is a vital part of everyday life. As it enters the atmosphere it is scattered creating our wonderful blue skies. It triggers signals to our brain that it is daytime and so should be awake, or as it goes that night is coming. Also…
..blue light is everywhere
However, as it is also higher in energy it easily penetrates to the back of the eyes where the body has to process this energy. It also scatters on the systems of the eye which can lead to glare and eye strain. Being the key to our body clock (or circadian rhythms) changes in blue light exposure can have an impact on our sleep pattern.
In short, quite a lot.
As many of us spend 10 hours or more in front of some sort of digital device and in-between might be outside, it is impossible to avoid blue light. We can easily minimise its effects.
All these steps should help keep your eyes in good shape and ensure you have a good night's sleep.
Most parents worry how much time their child is spending on digital devices.
This fact sheet produced by the Association of Optometrists (AOP) helps give you the facts about screen time.
As we stare at digital screens all day long, we are being exposed to increasing amounts of blue light.
The overuse of computers, tablets, e-readers, smartphones and other electronic devices can cause digital eye strain and eye fatigue.