Posted on 09/14/2020 3:57:40 PM PDT by Pining_4_TX
There is no published evidence to demonstrate that normal environmental (including electronic) exposure to blue light damages eyesight. However it is acknowledged that eye strain can occur from staring at electronics, which can cause fatigue and headaches. Regular breaks from staring at screens (large or small) is recommended to reduce eye strain.
There is some evidence that blue light from electronics can disrupt circadian rhythms, however, by suppressing the production of melatonin, a hormone that regulates our sleep. This has led electronic manufacturers to offer “night light” settings that reduce the amount of blue light displayed and give your screen’s display a pinkish “warm” tone. In this setting, amber or “blue light” blocking glasses can work like a “night light” setting for our eyes, blocking the blue-light disruption that can be caused by artificial lights or electronic use. But there is no evidence to show that the blue light from electronic devices causes harm. Nor should it, as it’s well below the levels our eyes are exposed to when we’re outside. An analysis published in Nature examined exposure from a number of electronic sources and compared it to international limits. It noted:
Humans have evolved under natural light from the sun. Intentional staring at the sun causes eye injuries, as is reported after solar eclipses.6, 7 However, continuous viewing of the blue sky, certainly in the UK, does not present a risk of eye injuries. Comparing natural exposures with the reasonably foreseeable exposure to optical radiation from lamps, computer screens and mobile devices, such as smartphones shows that the actual spectrally weighted irradiance is lower than the natural exposures.
(Excerpt) Read more at sciencebasedmedicine.org ...
My right eye was giving me lots of trouble(muscle around my eye) so I bought some Computer Glasses , orange tint and they cleared it up
If you want a nonscientific estimate- about half of people think it makes a difference, the other half doesn’t notice any change. It seems to be fairly subjective and you have to try it to know if you like them. The newer ones don’t have any yellow tint to them so at least it doesn’t mess up your color perception.
How about a black light blocking...oh never mind.
I remember the vids of Hillary wearing these glasses. Then...all of a sudden...YT took down medical academic studies of using these glasses for the use of Parkinson’s.
There’s also free software that might help, I use this sometimes.
https://justgetflux.com
I had the lenses remade, in a different lens material to try to solve the refraction problems, and I instructed that I didn’t want any blue-blocking filter. They tried hard to sell the blue filter, making it sound like LED screens would make you go blind without it, but I still told them no. Yet, when I picked them up I noticed in the mirror that the lenses had a slight purple tint (which is what others see if you have a blue-blocking coating).
Ultimately, I kept those lenses because the refraction was much better and I was tired of going back. The blue filtering is more subtle than the original pair, but still introduces a slight yellow tint. Makes it impossible to calibrate my TV without removing my glasses.
I think it’s just a fad, and an excuse to pad sales with an additional charge.
Back in late 1970s/early 1980s, Scandinavian countries mandated the use of/access to, amber crts for workers.
Maybe the white phosphorous had skewed towards the blue too much?
My eyes are my only health problem, and my eye doc says “no more than 5 hours/day online. So I’d be very happy if those glasses actually work.
Anyone know?
I sort of rely on the fact that millions of years of evolution has the supposed problem covered. That and squinting.
I use two large monitors at work (until I retire at the end of the Month) and use an IPhone, I had lasik years ago and wear reading/computer glasses. I have blue blocking lenses and they do help. Taking breaks is what helps the most..
“I sort of rely on the fact that millions of years of evolution has the supposed problem covered.”
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Well, as long as it got it fixed in the last 50 years or so, when screens became ubiquitous.
Anyone ever try the blue light (night light) settings on Windows 10? Other electronic devices also have blue light features.
I never knew that. I sold computers in the early to mid-80’s, while working my way through college, and I certainly remember the amber CRTs. I just thought they were created primarily for marketing purposes, to differentiate from the ubiquitous green CRTs.
Off-topic: My favorite era in the computer industry was the late 70s to early 80s (pre-IBM PC). Once IBM took over, everything became commoditized, which admittedly was probably necessary for the future growth of the industry. However, I miss that early innovation, and the variety of machines it produced. I especially loved the Apple II, and was a big fan of Atari’s machines, from the 8 bit line to the 16/32 bit ST and the full 32 bit Falcon 030. What was so exciting was discovering all of the hidden capabilities of those machines, and seeing how talented programmers could make them do amazing things that no one expected. Every new machine was a treasure trove waiting to be explored.
All of that ended with IBM’s domination, though Apple continued to innovate in a less “wild west”, more corporate manner, at least for a while. The computing capabilities we all have at our fingertips today are astronomically beyond those of the early systems, yet it all now seems so boring in a way. We never see new, paradigm-shifting capabilities introduced, just annual bumps in speed and memory.
My son was having eye spasms from computer screens, the filtering glasses have helped him tremendously. The eye doctor saw the difference at his next visit.
well it is true that certain wavelengths are more harmful to your eyes, and some are more beneficial.
but as this is discussing a product for sale, there’s always a certain amount of hype behind it
just dont know about these particular glasses’ quality
at the same time, people now use red light therapy devices on theirneyes to help improve their vision
The reason we havent adapted to it is that artificial sourced blue light is not balanced with other wavelenghs like when it comes from sunlight. So in a dark room with a screen our pupil remains open wide and the eye absorbs more blue light from some screens than it would from being out in the sun.
The following example article would have us believe that there is a problem with blue light versus eye health. Corrections, insights welcome.
"When researchers exposed the retinal to blue light, it triggered a reaction in which the retinal releases reactive oxygen species (ROS), poisonous chemical molecules that killed photoreceptor cells.” — Noel Kirkpatrick, Why Blue Light Is 'Toxic' to Your Eyes, Aug. 2018.
Until you click on them, the headlines here on FreeRepublic are blue.
8^)
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