Since lockdown measures began, with people spending more time in front of screens that ever before, blue light has been gaining more coverage in society
Now you may be more familiar with the harmful effects of blue light, have you considered protection such as a blue light filter? For most people, the mere mention of “blue light” or “visible blue light” raises statements such as:
“Blue light is that bad that it can cause you to go blind”
“You should never use your tablet again because you can ruin your eyes”
“Blue light is poison for the eyes”
“With blue light exposure, you’ll never be able to sleep properly again”
Although most people know of it, blue light is no a stranger to being subject to misinterpretation. You might be surprised to hear that blue light actually has its benefits and dangers.
To help you understand blue light, we've pulled together some key facts.
In this technology-driven world, it is vital to know everything about blue light, especially because we are exposed to it daily. Here are a few key points about blue light that everybody should know about:
- Fluorescent and LED lighting
- Flat-screen televisions
- Display screens of computers
- Electronic notebooks
When compared to sunlight, the strength of blue light (or High-Energy Visible light) from mobile devices and electronic screens is significantly less. However, the time that is spent on using them and the proximity to us increases damage.
A significant reason as to why the eyes are significantly affected by blue light is because they aren’t structured well enough to withstand the strength of high-energy visible light. The anterior structures (the cornea and lens) may be strong enough to block UV rays out, but are unable to block off blue light from reaching the retina and potentially damaging it. Once blue light penetrates the anterior structures and goes all the way to the retina, the risk of macular degeneration increases—a condition that can lead to permanent eye damage and vision loss.
Researchers have discovered that ample, controlled amounts of blue light exposure are vital for good health, achieving benefits such as:
- Increased overall alertness
- Improved memory
- Enhanced cognitive function
- Elevated moods (such as treatment of “seasonal affective disorder” or “SAD”)
As fear-mongering over blue light becomes more common due to poorly-researched health articles and self-proclaimed health experts, it is essential to know the truth about the concept. The four previously-mentioned blue light facts on this list are essential for staying on top of misinformation, so make sure to take all of them to mind!