You might have heard about blue light blocking glasses. There’s been a bit of a buzz surrounding blue light recently, but just how bad is it for your eyes?
In this blog post, we’re going to sort some of the blue light facts from the fictions and look at how protective glasses can help you.
1. Blue light is all around us
Some experts would have us believe that our biggest exposure to blue light comes from our TV, computer screen, smartphone, or tablet. It is true that these devices emit blue light. However, the main source is actually sunlight. A spectrum of different colors make up the rays from the sun.
Ultra-violet (UV) and infrared are at the extremes of this spectrum with blue light making up a large part. In fact, approximately a third of the light visible to our eyes is blue. So, we are really most exposed when we’re outdoors!
2. Our eyes are unable to block blue light naturally
Did you know that UV light is blocked from entering our eyes? Less than one percent ever makes it to the inner eye. In comparison, almost 100 percent of blue light reaches the retina and can damage light-sensitive cells. Over time, this may cause macular degeneration. The result can be permanent eye damage or, in extreme cases, even blindness.
3. Blue light is bad for your eyes
In comparison to other colors, blue light has a short wavelength. This means it produces a lot of energy that causes it to scatter, making it difficult to focus. Spending hours in front of the computer screen or constantly looking at your phone bombards the eyes with blue light.
This unfocusable light contributes to digital eye strain—a condition which is a culmination of different problems and causes symptoms including fuzzy vision and back and neck pain.
By limiting the time spent on devices, or by wearing blue light blocking glasses, you can reduce the risk.
4. Blue light affects sleep patterns
If you find yourself having difficulty getting to sleep, blue light could be to blame. Unfortunately, it messes with our sleep patterns by interfering with our in-built body clock (or circadian rhythm).
Watching TV or using your smartphone just before going to bed causes a change to the circadian rhythm. Our brains are tricked into thinking that it’s not yet time to sleep. Try to avoid using devices a couple of hours before bed time.
5. Not all blue light is bad
Although it gets a lot of bad press, blue light exposure is actually essential for keeping us healthy. Studies show that it helps memory, cognitive function, makes us more alert, and can even improve your mood.
Exposure to blue light earlier in the day helps your body clock function properly. So even if it is just a short stroll in the daylight, get outdoors to get a good night sleep. But don’t forget to wear sunglasses.
But there is such a thing as “too much of a good thing,” and that’s the case with blue light.
By wearing protective glasses, you can limit your exposure to blue light. They can help ease digital eye strain and reduce your risk of macular degeneration.
You don’t have to buy orange-tinted lenses like in the past. Times have changed and these glasses are now available without a tint. If you have any questions about blue light blocking glasses, please contact us at Main Fashion Optical.