Demystifying blue light.
When we step outside to enjoy the beautiful weather, we tend to automatically think about putting our sunglasses on - and rightfully so. We all know about the harmful effects that UV rays can have on our eyes and skin, yet most of us don’t know about the harmful effects of blue light.
FIRST, WHAT ACTUALLY IS BLUE LIGHT?
Light is made up of electromagnetic particles that travel in waves. Every wavelength is represented by a different colour together these wavelengths make up the electromagnetic spectrum. However, the human eye is sensitive to only one part of this spectrum: visible light.
Blue light is a colour in the "visible light spectrum" that can be seen by the human eye.*
WHERE CAN YOU FIND BLUE LIGHT?
Truthfully, blue light is everywhere - the sun is actually a very important source of blue light! Luckily, if you own quality sunglasses that filter blue light, you’re covered when stepping outside of your home. However, you can also find sources of artificial blue light indoors such as LED lighting, smart phones, tablets, computer screens, and even your friendly flat screen TV.
BUT, WHY IS BLUE LIGHT SO BAD?
Actually, blue light isn’t all bad!
Sugar in its raw natural form isn’t necessarily bad for our health. In fact, we need a certain quantity it to stay active and alert. However, it’s better to avoid artificial sugar.
The same thing goes for blue light. Natural blue light from the sun is essential for good health. Blue light is very important in regulating our circadian rhythm — the body's natural wakefulness and sleep cycle. But too much exposure to artificial blue light, especially late at night, can disrupt this cycle, potentially causing sleepless nights and daytime fatigue.
Prolonged exposure to blue light also contributes to digital eye strain, headaches, and could possibly be a risk factor for macular degeneration. Sleep cycle disruption is also associated with a greater risk of certain types of cancer, diabetes, heart diseases and obesity.
HOW CAN I PROTECT MY EYES FROM BLUE LIGHT?
Many options are available. If you currently have prescription eyewear, you can ask your optometrist about which special blue light filter coatings are available. if you currently do not wear glasses and don’t need a prescription, or if you simply prefer to wear your contact lenses, there is also an option for protecting your eyes - it’s called TrueBlue.
WHAT IS TRUEBLUE?
Simple, non-prescription glasses that help filter out the “bad” blue light! TrueBlue lens technology actually incorporates nature’s defences to filter blue light. Also, children are more at risk from damaging Blue Light because their eye lens allows unfiltered light to reach their retina. This is why Treble glasses are also offered in children frames. Your kids can wear them while using computers, tablets, watching TV & playing video games.
*Source: bluelightexposed.com
