Blue light glasses
We’ve put together an honest guide on lights blue secret, to help you decide if the coating could work for you.
Out of the blue
Blue light filters, computer-use lenses, screen glasses. You may have heard these delightfully digital-sounding terms being thrown into conversation by opticians before. But what exactly is their use? What is blue light anyway?
Let us shed some light
First up, a quick bit of science. Blue light sits towards the UV end of the visible light spectrum, naturally originating from the Sun. This means that during the day, there is an abundance of blue light around, even on a cloudy Autumn’s day. This causes the body to produce hormones such as cortisol, making us feel awake. Then in the evening, as the Sun sets, the amount of light is significantly reduced, preparing us for a good night’s sleep.
In a similar, less abundant way, the screens of our laptops, smart phones, iPads, and so on, also emit blue light rays. So if you’re working in front of a computer screen until late in the evening, this can disrupt our body’s natural circadian rhythm.
Applying a blue light filter to a glasses lens blocks a high percentage of blue light rays from entering your eyes. This can regulate your eye’s daily intake of it, helping you drift off into dreamland when you need to.
See your true colours
If you’re someone who relies on seeing true colour when working on the computer, do take note of the following. As you may have noticed, blue light filter lenses have a light blue or sometimes yellowish tint to them. So if you depend on colour accuracy, like a photo editor or graphic designer, we do not recommend using this coating.
At the end of the day...
As to any proven benefits of a blue light filter, this is still up for discussion amongst optometrists and spectacle-wearers alike. Current research doesn’t prove that modern digital displays emit enough blue light to be harmful. However, continuous screen use does increase light scatter and affect our focus, which can be improved by reducing our exposure.
The way we see it, it’s good to have options. We can add this coating to your prescription or non-prescription lenses for an extra €46. When ordering online, simply select the Blue Light Filter option when prompted.
Need more information? Get in touch or pop by one of our stores for a chat.