The Science


What is blue light?

Blue light is everywhere! In fact, the sun is the biggest source of blue light. We are constantly exposed to all light waves, natural and artificial, in varying lengths, strengths, and the energy. As blue light rays have short wavelengths, they emit a high energy. This high energy passes through the cornea and lens and reaches the retina. Over exposure to these light waves can be detrimental to our well-being. This is especially true outside of the natural sunshine hours, so to speak.


How is it relevant?

Blue Light has become somewhat of a ‘hot’ topic due to our increased dependence on electronic devices that emit this type of light at close proximity. The use of terms such as ‘digital eye strain’ and ‘computer vision syndrome’ are becoming all the more common as we are spending endless hours in front of our computers, tablets, smart phones and TV’s. For example, as we are writing this and as you are reading this.


How does it impact us?

Reducing prolonged exposure to artificial blue light may help combat headaches, eye strain, fatigue and facial tension. This is especially important at night. Blue light suppresses our natural production of melatonin and increases our cortisol and this messes with our circadian rhythm- making it harder to fall (and stay) asleep. Maintaining a synchronized circadian rhythm is important to our overall health and well-being.


What should I do?

The bottom line is that daytime exposure to blue light is essential, especially in the early part of the day, as it helps boost energy and attention. This makes us more alert and productive, increases our reaction times, and even our mood. Not so blue after-all. It also helps us to fall asleep at night as it triggers melatonin production later on. Just like most things in life it boils down to a healthy balance and being particularly careful from afternoon onwards.

The best way to limit blue light exposure is to limit your screen time use. Take frequent breaks and log off at least an hour before bed time. As this is unlikely, we suggest wearing your stylish Stockholm Squared glasses to filter out those pesky rays! 


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