How Blue Light Affects Your Eyes?
- Pieter Maas
How harmful is blue light? – Blue light exposure from screens is small compared to the amount of exposure from the sun. However, there is concern about long-term effects of screen exposure from digital devices. This is especially true when it comes to too much screen time and screens too close to the eyes.
- According to the Vision Council, 80% of American adults use digital devices more than two hours per day.
- Nearly 67% use two or more devices at the same time.
- Fifty-nine percent have symptoms of digital eye strain.
- Since our eyes are not good at blocking blue light, nearly all visible blue light passes through the front of the eye (cornea and lens) and reaches the retina, the cells that convert light for the brain to process into images.
Constant exposure to blue light over time could damage retinal cells and cause vision problems such as age-related macular degeneration, It can also contribute to cataracts, eye cancer and growths on the clear covering over the white part of the eye.
According to a vision study by the National Eye Institute, children are more at risk than adults because their eyes absorb more blue light from digital devices. People also tend to blink less when using digital devices, which contributes to dry eye and eye strain. Other common signs of eye strain include headaches, blurred vision, and neck and shoulder pain.
According to the Vision Council, 27% to 35% of Americans reported experiencing one of these symptoms after using digital devices.
What are the disadvantages of blue light glasses?
Cons of Blue Light Glasses – • The blue cut lenses alter the colour of everything you see in the yellow hue. • Another blue cut lenses disadvantage is that they are unable to protect skin that also contains melanopsin, a photoreceptor that tells your body whether it is day or night.
A major blue cut lenses disadvantage is that the lenses have a bluish reflection. The lenses of blue light filter glasses exhibit a little bluish sheen since they are designed to reflect this blue light. This isn’t something you’ll notice when you’re wearing them, but it’s a feature that others will notice.
However, it’s merely a reflection that can only be seen in bright light.
Do LED screens emit blue light?
Do LED lights emit blue light? – Yes—but no more blue light (pdf) than other lightbulbs, provided they give off the same balance of shorter and longer light wavelengths. “Warmer” light has more of a yellow tone to it, while “cooler” light, which is similar to daylight, appears a little bluer.
Is blue light eye protection worth it?
Do Blue Light-Blocking Glasses Help With Eye Strain? – A recent study suggested that blue light-blocking glasses do not improve symptoms of digital eye strain. The American Academy of Ophthalmology does not recommend blue light-blocking glasses because of the lack of scientific evidence that blue light is damaging to the eyes.
Do blue light blocking glasses Protect eyes?
Key takeaways: – Blue light itself is not harmful- as long as it’s coming from natural sources. The excessive blue light that we receive from screens, devices, and LED lighting has been scientifically proven to cause eye-strain, disrupt sleep cycle and cause cardiovascular problems.