blue light blockers

velita

The Force is Strong With This One
_http://www.zennioptical.com/beyond-uv-blue-blocker
Good company.You can get your blue light blocking lenses prescription or not -prescription($16.95) and a good choice of frames :cool:

Mod edit: link deactivated.
 

Keyhole

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Those types are quite good for the price, but should only be worn in the daytime when inside under artificial light. Unfortunately these kinds of blue blocking lenses with a standard frame will not fully block out blue frequencies and don't block any green. With a frame like this, light still hits the eye by passing through the gaps in the side.

For much better protection, mber goggles should be worn as soon as the sun sets. Ones like these are the most cost effective:

https://www.amazon.co.uk/Uvex-S1933X-Eyewear-Sct-Orange-Anti-Fog/dp/B000USRG90/ref=sr_1_1?ie=UTF8&qid=1473237864&sr=8-1&keywords=uvex+skyper



These do a much better job at blocking blue frequencies, however these do still allow green frequencies. Both blue and green have been found to suppress melatonin. The only lenses I am aware of that block both blue and green are these:

https://www.amazon.co.uk/HDE-Protection-Safety-Glasses-Lasers/dp/B009T6RN0G/ref=sr_1_1?ie=UTF8&qid=1473238040&sr=8-1-spons&keywords=Red+laser+glasses&psc=1



Ideally, these red ones should be worn roughly 1/2 an hour before bed, because they make people very drowsy and it is difficult to see anything with them on. The amber ones should suffice until then.

Here is a comparison that someone has put together of the blue blocking abilities of the different types of lense. FYI the "Bluetech" lense is similar to the brand of lense that you posted above.

 

velita

The Force is Strong With This One
Thank you for the info.!
Could you specify if regular amber-colored sunglasses could be used to block blue light from computer screen?
 

Keyhole

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velita said:
Thank you for the info.!
Could you specify if regular amber-colored sunglasses could be used to block blue light from computer screen?
It would depend on the type of lense. Its possible that they would, but with sunglasses you will still have the issue of light entering via the gaps at the side. Hence why it is safer and more effective to use the UVEX brand or similar to completely protect the eye from all sides. When you begin to use them, you will probably see major improvements in sleep quality + quantity in a short period of time.
 

Beau

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Keyhole said:
Those types are quite good for the price, but should only be worn in the daytime when inside under artificial light.
So if I wore the blue blockers during the day and then wore the Uvex amber-colored ones at night over the blue blockers, that would be a good combo?
 

Beau

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Keyhole said:
It would depend on the type of lense. Its possible that they would, but with sunglasses you will still have the issue of light entering via the gaps at the side. Hence why it is safer and more effective to use the UVEX brand or similar to completely protect the eye from all sides. When you begin to use them, you will probably see major improvements in sleep quality + quantity in a short period of time.
I've started wearing the amber-colored lenses at night before bed when reading. My sleep really has improved a lot, I don't take near as much time to fall asleep as before and am sleeping soundly throughout the night.

I also just received new glasses from the above site, Zenni Optical. For $50 I received the frames and lenses at my prescription plus they block out blue light during the day. For that price, you really can't beat it. Plus, it fights against the glasses monopoly that results in the high costs of glasses:


https://youtu.be/h7H-_8UkmFU
 

Keyhole

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Beau said:
Keyhole said:
Those types are quite good for the price, but should only be worn in the daytime when inside under artificial light.
So if I wore the blue blockers during the day and then wore the Uvex amber-colored ones at night over the blue blockers, that would be a good combo?
Yeah, that sounds like a good idea. You may not even need to wear the blue blockers underneath TBH. I usually only wear the blue blockers in the daytime to protect the eye against oxidative stress. The Uvex usually work fine by themselves for me later on in the evening.

Beau said:
Keyhole said:
It would depend on the type of lense. Its possible that they would, but with sunglasses you will still have the issue of light entering via the gaps at the side. Hence why it is safer and more effective to use the UVEX brand or similar to completely protect the eye from all sides. When you begin to use them, you will probably see major improvements in sleep quality + quantity in a short period of time.
I've started wearing the amber-colored lenses at night before bed when reading. My sleep really has improved a lot, I don't take near as much time to fall asleep as before and am sleeping soundly throughout the night.
Awesome news Beau :D The results are really pretty amazing. I used to be one of those people who would stay awake until early AM and sleep through until late morning, and wonder why I could not sleep at night time. Well it turns out that I am extremely sensitive to light. As soon as I started wearing those uvex glasses, I can barely stay up past 10 o'clock these days!
 

Bastian

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There is a really nice little piece of software which does the job (filtering out the blue light of computer screens, after sunset or even during daylight) : "F.lux" - and it's free (contributions recommanded). Works on Windows, MacOS, and others...
_https://justgetflux.com/
 

987baz

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I also use F.lux, there is another app called Iris, which I just read about in one of Mercola's articles _http://articles.mercola.com/sites/articles/archive/2016/10/23/near-infrared-led-lighting.aspx which is worth a read. The Iris app has much more control if you're interested. _http://iristech.co/?ap_id=light
 

Solie123

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Bastian said:
There is a really nice little piece of software which does the job (filtering out the blue light of computer screens, after sunset or even during daylight) : "F.lux" - and it's free (contributions recommanded). Works on Windows, MacOS, and others...
_https://justgetflux.com/
I use f.lux as well! I actually have it set to be be dim all day, regardless if the sun is up or down. I find this is more gentle on the eyes and prevent eye fatigue which I use to have a lot sitting in front of a computer all day.

I have this Himalayan salt lamp I bought a little while ago which is the only light I use after sun down (for the most part). It's very dim and has a pinkish, orangey yellow glow to it that I find very soothing - puts me to sleep right away!.
 

Keyhole

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Aside from computer software for eye protection, you guys may also be interested in installing new light bulbs around the house which emit a fuller spectrum with significantly less blue light and more red. We installed these ones and completely removed any fluorescent/LED's a while back : https://www.amazon.co.uk/Dimmable-Filament-Incandescent-Nostalgic-Decorative/dp/B01D2LFSWS/ref=sr_1_8?ie=UTF8&qid=1477311810&sr=8-8&keywords=incandescent+edison+bulb



As the image shows above, there are large amounts of Near IR and Far IR, coupled with all other colours including small amounts of UV.
 

987baz

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Keyhole said:
Aside from computer software for eye protection, you guys may also be interested in installing new light bulbs around the house which emit a fuller spectrum with significantly less blue light and more red. We installed these ones and completely removed any fluorescent/LED's a while back : https://www.amazon.co.uk/Dimmable-Filament-Incandescent-Nostalgic-Decorative/dp/B01D2LFSWS/ref=sr_1_8?ie=UTF8&qid=1477311810&sr=8-8&keywords=incandescent+edison+bulb



As the image shows above, there are large amounts of Near IR and Far IR, coupled with all other colours including small amounts of UV.
Unfortunately Incandescent bulbs are illegal down here in Oz :( I have managed to find some full spectrum bulbs, but they are still LED and are supposed to be 6000K. http://naturallight.com.au/

I will try to find some IR bulbs, but for now having the blue light blocking glasses will have to do.

I am also looking into getting some glasses for work, not that I need corrective lenses, I just want to block all the blue light as I spend a lot of time in the TV studio and in front a of computers and monitors. Another oz member told us about these lenses https://www.essilor.com.au/products/crizal/crizal-prevencia which would be great for work as they are normal reading type glasses with a special tint/coating :)
 

Keyhole

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987baz said:
Unfortunately Incandescent bulbs are illegal down here in Oz :( I have managed to find some full spectrum bulbs, but they are still LED and are supposed to be 6000K. http://naturallight.com.au/

I will try to find some IR bulbs, but for now having the blue light blocking glasses will have to do.

I am also looking into getting some glasses for work, not that I need corrective lenses, I just want to block all the blue light as I spend a lot of time in the TV studio and in front a of computers and monitors. Another oz member told us about these lenses https://www.essilor.com.au/products/crizal/crizal-prevencia which would be great for work as they are normal reading type glasses with a special tint/coating :)
Hmm ok, thats unfortunate. I have taken a look at the lenses, and i currently own some with similar specs. These are not very effective when it comes to blocking blue light. There are some companys which offer actual tinted lenses which do a much better job.

Ideally, the specs should block from 380 nanometres to between 450-550. I have just ordered 3 pairs of different lenses for different purposes. The 450 nm lenses are light yellow in color and are sufficient for daytime working environments where a darker tint may not be suitable. However, the most effective are 550 or 600 nm blocking which blocks out pretty much all blue light and most green for night time. An optician should be able to acquire ones like this.

I have attached an image for the specs of the lenses I have recently ordered (450nm, 500nm and 550nm). The company is called Norelight and the lenses are PLS lenses, which are probably available in austrailia.
 

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987baz

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Hmm ok, thats unfortunate. I have taken a look at the lenses, and i currently own some with similar specs. These are not very effective when it comes to blocking blue light. There are some companys which offer actual tinted lenses which do a much better job.

Ideally, the specs should block from 380 nanometres to between 450-550. I have just ordered 3 pairs of different lenses for different purposes. The 450 nm lenses are light yellow in color and are sufficient for daytime working environments where a darker tint may not be suitable. However, the most effective are 550 or 600 nm blocking which blocks out pretty much all blue light and most green for night time. An optician should be able to acquire ones like this.

I have attached an image for the specs of the lenses I have recently ordered (450nm, 500nm and 550nm). The company is called Norelight and the lenses are PLS lenses, which are probably available in austrailia.
Thanks for the info Keyhole, I am interested in knowing why blocking green at night is also good? I haven't heard this before. And just going on the info below it seems that maybe even the violet is not good?


Violet (380-450 nm)
Blue (450-495 nm)
Green (495-570 nm)
Yellow (570-590 nm)
Orange (590-620 nm)
Red (620-750 nm)

I'll check out Norelight, thanks again for the info
 

Keyhole

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Basically, there are a couple of reasons why you would want to block it when it is from an artificial source. The shorter wavelengths contain the highest photonic energy.when compared with the longer wavelengths, and have the potential to damage the mitochondria when uncoupled from red. In nature, the damaging effects of the violet and blue are naturally counteracted by the healing effects of near Infra-red and far infra-red. It comes down to the effect that light has on the mitochondria. Isolated short wave length blue light from an artificial source causes mitochondiial swelling, which make the mitochondria innefficient and subsequently leak out electrons. Red light prevents this and "balances out" the effects.

In response the the question about green light, green has also been shown to inhibit melatonin production at night time by stimulating the pituitary glad to release stress hormones such as adrenaline and cortisol. The pituitary gland and the pineal gland work in opposites.

Red is the only chronobiologically neutral color, meaning it does not prevent the body from producing and becoming entrained with the normal homonal and seasonal cycles. Hence why it is optimal to block out both green and blue at night time.
 
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