What is blue light?
Blue light is a part of the visible light spectrum; it has the shortest wavelength and highest amount of energy.
There has been a lot of interest in this topic recently due to our ever digitalising world. Digital devices emit man-made blue light, which in itself causes problems which we will now discuss.
Where is blue light found?
Blue light is a naturally occurring phenomenon in nature (sourced mainly from the sun). Blue violet light emitted from the sun regulates circadian rhythm (the body’s natural sleep pattern). However, when it is artificially created from digital screens it then can cause problems.
It is important to note, display screens on digital devices emit only a fraction of that of the sun, but the amount of time that people spend using these screens and how close they are when they’re using them are what we are concerned with. Excessive HEV light exposure from digital screens such as TV’s, computers, smart phones and tablets can have an adverse effect on your eyes, causing digital eyestrain, headaches, and physical/mental fatigue. This is because the eye is not very good at blocking out this spectrum of light, and virtually all visible blue light passes through the cornea and reaches the retina.
What’s the solution?
The easiest way to reduce exposure is by using a blue light filter or a yellow tint in your glasses (even if you don’t necessarily wear them). It is better to use a proper blue light control coating however because they maximise the benefits of digital devices, while reducing the risks associated with them. At the same time, these coatings let in the good light that regulates normal sleep pattern and mood, this then boosts brain activity and function.
By choosing a blue light control coating such as Blue Control, you are protecting your eyes on a daily basis and maintaining your long term eye health.
See below how this lens works and why it is so important to reduce exposure as much as possible.