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Thread: LED lights damage eyes and disturb sleep, European health authority warns

  1. #31

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    In Čeština, photosynthesis is fotosyntéza, everything photo in English is foto in czech (and it sounds exactly the same), and i have to google words sometimes and spellcheck the final text in an app.
    But thank you for complimenting my written English. It takes a lot of work though.

    I've heard people arguing exactly the same arguments, it keeps the driver awake, the human eye is more sensitive to higher cct, higher CRI makes for better vision... Everything sounds more than plausible from the start.
    Until you get experts from all the fields involved (even the pesky bug guy) and put it all on the paper.

    Then you get to the answer, we should not be lighting our streets at all.
    If we have to, it should be PC amber. It works well enough and does lesser harm to nature or humans sleeping.
    You get your dose of blue from your own headlights reflecting of stuff or your dashboard. That's more than enough to keep your melatonin low, if you are reasonably rested.

    Yes, megalumen is blinder/strobe fixture.
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  2. #32

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Humans sleeping do not look at street lights. That is just parroting doomsayers who have an axe to grind. Streetlights have phenomenal ROI due to greatly reduced accidents, pedestrian injuries, and even encouraging economic activity. PC amber is not as good for peripheral vision and pedestrian protection no matter how many times you say it is good enough. Neither is reflected headlights enough to suppress melatonin. It's easy to look at the studies of light level versus melatonin suppression to see that is just not the case.

    Higher CRI has pretty much 0 impact on visual performance concerning street lighting or vehicle lighting ... those pesky experts figured that out long ago. Low CRI is perfectly good for high speeds, and low CRI but higher CCT is perfectly good for low speeds.

    It is not a matter of whether it is plausible, it's a matter of what is true, and we know what leads to greatest safety. When people are on the road, they need to be awake and alert. Curtains can block 100% of street light for sleeping and better light control helps as well. The only balancing input is danger to animals (and bugs).

  3. #33
    Flashaholic* xevious's Avatar
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    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    These days a lot of government "authorities" making such claims are usually not backing it up with a solid scientific basis, and usually there's some ulterior motive (like a company pushing "LED eye safe" lights).

    UV light is not good for your eyes, and when you're exposed to it, it doesn't feel right to the eyes. It plays "tricks" on your visual perception, putting strain on muscles. And that's a sign right there that something is amiss.

    There's a reason why LED manufacturers have shifted to warmer tints. Most people just don't like cold, bluish light. And it's for a reason -- it creates eye strain. So, LEDs have definitely moved in the right direction.
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  4. #34

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by xevious View Post
    These days a lot of government "authorities" making such claims are usually not backing it up with a solid scientific basis, and usually there's some ulterior motive (like a company pushing "LED eye safe" lights).

    UV light is not good for your eyes, and when you're exposed to it, it doesn't feel right to the eyes. It plays "tricks" on your visual perception, putting strain on muscles. And that's a sign right there that something is amiss.

    There's a reason why LED manufacturers have shifted to warmer tints. Most people just don't like cold, bluish light. And it's for a reason -- it creates eye strain. So, LEDs have definitely moved in the right direction.
    I find people make a lot of statements on the web that do not have a solid scientific basis either.

    Almost no white LEDs have UV.

    Warmer tints do not inherently have less eye-strain. In many cases, they actually have more, especially where high visual acuity is required.

    People only prefer warmer tints at lower lighting levels like in a house and even then, there is some cultural aspects to that. Asian cultures tend to prefer cooler tints. Many people prefer cooler tints at high lighting levels, i.e. when you get 500+ lux ... sunlight is not a "warm" tint.

    There was actually a test done many years ago that showed that for many scenes people preferred a cooler tint with good color gamut over warmer high CRI.

    Yup ... science.

  5. #35
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    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by MeMeMe View Post
    I find people make a lot of statements on the web that do not have a solid scientific basis either.

    Almost no white LEDs have UV.

    Warmer tints do not inherently have less eye-strain. In many cases, they actually have more, especially where high visual acuity is required.

    People only prefer warmer tints at lower lighting levels like in a house and even then, there is some cultural aspects to that. Asian cultures tend to prefer cooler tints. Many people prefer cooler tints at high lighting levels, i.e. when you get 500+ lux ... sunlight is not a "warm" tint.

    There was actually a test done many years ago that showed that for many scenes people preferred a cooler tint with good color gamut over warmer high CRI.

    Yup ... science.

    Personally my favorite (outdoor) light is a 500 watt halogen quartz. If they made a LED with the exact same output specs I'd be all over it.
    Last edited by TechGuru; 05-28-2019 at 04:27 PM.

  6. #36

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by TechGuru View Post
    Personally my favorite (outdoor) light is a 500 watt halogen quartz. If they made a LED with the exact same output specs I'd be all over it.
    At night, you would be unlikely to tell the diff between a 90 CRI 3000K LED and a halogen, so they pretty much do, you just a whole lot less power :-)

  7. #37
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    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by MeMeMe View Post
    At night, you would be unlikely to tell the diff between a 90 CRI 3000K LED and a halogen, so they pretty much do, you just a whole lot less power :-)
    When I say the same specs I am including the output lumens, which is around 8,750- 9,500...

  8. #38

    Default LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by usdiver View Post
    Regarding the sunlight, we were born with natural filters and means in our eyes to deal with uv light from the sun. It’s natural and though bright isn’t pleasant you will not have uv damage to the eyes unless you’re looking straight at it. Man made uv however is a totally different animal and it can mess you up.
    Can you please elaborate further about the eye natural UV filters (in plural if possible)?

    I'm being serious, I had a situation on an occasion last summer, where I was exposed to the sunlight for a lot more time than original planned, the original plan was doing a minor fixing of satellite system for 30 min to 1 hour max from 6:00 to 6:30 AM or maximum 7:00 AM, to fix 1 faulty line with all it's related stuff, so I went there without head cap or sun glasses, but things were not as expected, there were a lot more corrosions and I ended up doing 8 lines (18 junctions in and out of parts) and a lot of makeshifts to replace corroded parts of the cables, and all the rest of related fiddling, it took until 1:30 PM to finish the job (I had my arms burned bright red by that time), but I tried to avoid the sunlight most of the time, and was thinking about that the huge white satellite dish was even further concentrating the reflected sunlight of it, but I was in get down and dirty situation, and also was not fully aware (nor educated) about the hazards, all was in my mined while working was my youth days (and years) of playing in the school yard under the sun and going to the beach and swimming pools without any sunglasses or head caps, and I thought that my eyes should have muscle memory (if that's the correct English expression). But later that night I felt a small headache, then slept normally, and everything seemed normal for about a month, only some tiny (barely noticable) no vision stationary spots started to show up in my eye sight field of view, and that's different from my familiar floaters (which moves in my eyes liquid humorous according to eye movement and gravity), other than that nothing new and accordingly I forgot about all that event. Then at the end of that month when I accidentally shrugged my head to avoid a flying insect (big flying ant) I got immediate headache (similar to the one at the night of the sun exposure day), but with immediate dizziness this time, I went to sleep, and next morning I started to see big area of no vision spot (Grey) when I turn my eyes in certain direction, so I made eye sight exam appointment, and by the time that it took to happen, I was diagnosed with multiple retinal tissue transforming spots and liquidised humorous gel in the left eye that showed the big blind spot (apparently it's several and not only one big spot as I thought) of retinal transforming, I think he meant degeneration spots (he said its retinal tissue thinning when I asked) located at around the macula in the middle FOV and the peripheral section (I guess), which there was not any sign of it present in my previous appointments the year earlier, and I could see the Grey spots (retina tissue cells) that the doctor was talking about while he was lighting the inside of my eyes with his new stronger white light 6500 K (head light this time), while I had not seen them before in the previous check ups when he used to use his older weaker neutral penlight 4500 K, where the cells of my retina looked smooth and healthy, when I was diagnosed totally healthy but with only the floaters issue.

    (*I'm guessing here that many of us know how our fovea manage to see the inside peripheral retina cells inside our eyes when the doctor illuminate the inside of the eye with a pen flashlight.)

    Mined you, I have Green eyes and very light sensitive all over my life and have allergy, and was living mostly in dark environment (and daily total darkness periods) for the vast recent years of my life before that event, not totally, but mostly (much more than what one may consider normal conditions), so my eyes were not used to sunlight exposure for years, and got myself all of sudden directly into that sunny situation, it was sudden impact on the eyes. Another thing, until now I still have good eyesight (beside those blind spots and floaters) about 9.5/10 in each eye, and don't have cataract (my eyes lenses are clear and haven't yellowed up yet the thing that may help blocking UV rays and protect the retina tissue in people with cataract), my dark adaptation vision is very strong, and from thorough extreme darkness vision testing, I seem to not have lost any of my dark vision in any of the same degenerated cells spots that I lost day sight in them.

    Maybe "MeMeMe" or anyone who got some knowledge about eyes sunlight exposure can shade some light (little pun there). Can that one session cause or speed up retinal degeneration? And what do you know about those eye's natural UV filters if they exist?
    Last edited by Midnight.Sun; 05-29-2019 at 09:59 AM.

  9. #39

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by TechGuru View Post
    When I say the same specs I am including the output lumens, which is around 8,750- 9,500...
    Why settle for 8-10,000 lumens, how about 30,000-40,000?

    http://ce.citizen.co.jp/lighting_led...710_180423.pdf


    But if you only want 10,000:

    http://ce.citizen.co.jp/lighting_led...710_180423.pdf

  10. #40

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by Midnight.Sun View Post
    Maybe "MeMeMe" or anyone who got some knowledge about eyes sunlight exposure can shade some light (little pun there). Can that one session cause or speed up retinal degeneration? And what about the eye those natural UV filters if they exist?
    The web, especially a non medical forum is not where you go for medical advice. What you have described sounds like you have a detached retina, but again, your doctor is far more able to tell you what is going on.

    Very bright lights can damage the retina, i.e. looking at direct sunlight, laser light, etc. That does not sound like what you experienced. When you get exposed to that level of light, your glare response kicks in and you turn away before damage is done, though things like lasers can be so intense you don't have time ... and IR lasers may not cause a glare response.

    Here is something to read: https://www.mayoclinic.org/diseases-...s/syc-20351344

  11. #41

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    You're right, I actually have all the medical infomation I need about my condition, from my doctor and from the internet. Just thought by chance I can get some info from light science knowledge point if view, plus I have never heard before that we are born with natural UV filters in the eye.

    I thought I had retinal detachment, and was afraid of, but no, my doctor found no tears anywhere in my retinal tissues. I only have those retinal transformations (the doctor's own words), beside the much earlier floaters of the humorous gel, which rarely leads to actual detachment, unless one is in advanced near-sight condition, or have close relatives with retinal detachment.

  12. #42
    usdiver's Avatar
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    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by Midnight.Sun View Post
    I have never heard before that we are born with natural UV filters in the eye.
    Then why do we get sunburn on our skin and yet not go blind from the suns rays? I like my sunglasses but rarely actually “need” them.
    Man made uv is totally different and therefore needs to be understood.
    Don’t Tread On Me

  13. #43
    Flashaholic* xevious's Avatar
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    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by usdiver View Post
    Then why do we get sunburn on our skin and yet not go blind from the suns rays? I like my sunglasses but rarely actually “need” them.
    Man made uv is totally different and therefore needs to be understood.
    Yes, we do have some filtration within our own eyes, but we also have autonomic protection such as squinting, shielding with hand or hat, and looking away. (yes, I know that's glare not UV). But UV damage to the eyes from the sun is a gradual thing, such as increased risk for cataracts. You like your sunglasses? USE THEM, especially if they're good quality. Btw, sunglasses need to be more than just reducing UVA/UVB exposure, but also have full optical correctness. The latter is often overlooked. I would stay away from unusually shaped sunglasses, because they're very likely far from optical correctness. While you can also check for focus change with/without glasses for short range, there is also the matter of long range. Because optical correctness is important, I try to stick with well known and trusted brands. Most of my sunglasses are made by Nikon. Their optical clarity and correctness is fantastic. Two of my favorites are made of tempered glass (a bit heavy), but I also have a pair made of polycarbonate (light). There are many other good brand choices out there as well.
    Last edited by xevious; 05-29-2019 at 01:05 PM.
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  14. #44
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    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by MeMeMe View Post
    Why settle for 8-10,000 lumens, how about 30,000-40,000?

    http://ce.citizen.co.jp/lighting_led...710_180423.pdf


    But if you only want 10,000:

    http://ce.citizen.co.jp/lighting_led...710_180423.pdf
    and who sells fixtures with these in them...?

    I'm wondering what Grainger has to offer since bigbox hardware stores only sell junk. Haven't felt like browsing their site on my 1mbps internet. Ya, I'm in the middle of nowhere, hence why I need bright lights.

    *EDIT*

    Browsed Grainger, only finding 5000K LED floods...
    Last edited by TechGuru; 05-29-2019 at 05:37 PM.

  15. #45
    Flashaholic* xevious's Avatar
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    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by MeMeMe View Post
    Why settle for 8-10,000 lumens, how about 30,000-40,000?

    http://ce.citizen.co.jp/lighting_led...710_180423.pdf


    But if you only want 10,000:

    http://ce.citizen.co.jp/lighting_led...710_180423.pdf
    Fascinating. I had no idea Citizen Electronics Corporation in Japan made LED's. Apparently this is a subsidiary of Citizen Watch Co, which was established in 2004 (although they made some LED products starting in 2000). I sent an email inquiry to them about vendors using their LED emitters.

    Very curious contact page for this... as the CAPTCHA mechanism is something I've never seen before. Instead of typing a displayed code, a series of letters is shown with the instructions to drag them over to the right in the proper order to spell a word (in this case for me, it was "WHITE"). It worked. Pretty neat.
    Last edited by xevious; 05-29-2019 at 03:21 PM.
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  16. #46

    Default LED lights damage eyes and disturb sleep, European health authority warns

    xevious,

    Thanks for post 43#

    Do you think my one session of working under high summer sun for ~ 8 hours none stop, suddenly after years of not seeing much sun light (I also worked without drinking any water or food and hadn't eaten much in the day before so nutrition support was really bad) could all that have burned the retinal cells that have "transformed" on me (I think the doctor meant degenerated as he said they are thinning in retinal tissues when I asked him what does he mean by transformings). Can that one long acute sunlight session have speeded up or started my retinal degeneration, by definition retinal degeneration is a long term process, I had not had long periods of time accumulating gradual sunlight exposure, as I had not seen the sun normally over the last 7 years or so. The thing is that I had no signs of starting retinal degeneration in any of my previous eyes check up appointments, just the natural floaters of collagen fibbers due to the vitreous humorous liquidation thing, but I am also almost 39 years old now.
    This sunlight session story I have not shared with my doctor because before the appointment I was thinking I have retinal detachment, because of the sudden big blind spot in my peripheral field of view, and it turned out to be that I have also multiple smaller blind (Grey) spots all around my peripheral field of view. Only after the check up and the diagnostic with retinal transformations (doctor's literal word) that I started to link it to the sunlight exposure session, which I had before forgotten about it completely when I went to the check up, but I will raise the issue next time, I'm now about one month late on my supposed 6 month regular check ups date, and will have to wait at least another month to be given an appointment.

    Also do you have solid information about our natural UV filters inside our eyes, no matter how basic it is, what is it that you think this protection is, the eye lens? Cataract does make it yellowish and less clear, is that the UV filter you're talking about? I don't have Cataract.


    *I'm not seeking medical information here, just like to hear opinions or personal experiences or any knowledge information.
    Last edited by Midnight.Sun; 05-29-2019 at 05:10 PM.

  17. #47

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by xevious View Post
    Fascinating. I had no idea Citizen Electronics Corporation in Japan made LED's. Apparently this is a subsidiary of Citizen Watch Co, which was established in 2004 (although they made some LED products starting in 2000). I sent an email inquiry to them about vendors using their LED emitters.
    I believe the largest seller of COB LEDs and have been for a long time. JV with Nichia or at least was.

  18. #48

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by usdiver View Post
    Man made uv is totally different and therefore needs to be understood.
    You keep saying this, and it keeps remaining NOT TRUE or based in any facts.

    Also, as stated, very few LEDs are based on UV technology, and normal blue + phosphor LED do not have UV.

  19. #49

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by usdiver View Post
    Then why do we get sunburn on our skin and yet not go blind from the suns rays?
    Before making claims such as you do, you may want to consider:

    - The skin is somewhat opaque and absorbs most of the sunlight, especially the UV in the upper layers concentrating the damage
    - Your skin and eye have different optical properties. Your skin absorbs light over wide angles. Your lens will focus light over a reduced angle, which would not, for any period of time, included a direct view of the sun. Your lens will also reflect light outside the critical angle .. not to mention being inset into your head, hence often being prevented exposure to direct sunlight

    Skin gets burned when it has direct exposure to sunlight. Your eyes do not get direct exposure for any period of time ... you look away, and other physical realities of your head also come into play.

  20. #50

    Default LED lights damage eyes and disturb sleep, European health authority warns

    Deleted post.

    It was posted without written content by mistake, only contained a quote.
    Last edited by Midnight.Sun; 05-30-2019 at 10:54 PM.

  21. #51

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by Mark Anthony View Post
    Personally I have found the danger caused by cool white LED's was mainly in my sleep cycle. I didn't know it was happening but lack of solid sleep was driving me nuts and messing with my health. Now I avoid any cool white lights/blue LED screen tints in the evening and all is much better.

    I do worry that cities trying to save money will switch out their street lights with LED's of the wrong tint that will have subtle effects on a population.
    You’re on it. It’s not mainly about where it comes from but when it comes. Time. Sun up. You’re up. Sun down. You’re down(sleep). The only light source I could stand behind after sundown would be fire. Kinda tough to do in this day and age. How important is your health to you?

  22. #52

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by CerLo View Post
    You’re on it. It’s not mainly about where it comes from but when it comes. Time. Sun up. You’re up. Sun down. You’re down(sleep). The only light source I could stand behind after sundown would be fire. Kinda tough to do in this day and age. How important is your health to you?
    Define Sundown .... is that after 8 hours of sunlight? 12 hours? 16 hours? 17 hours?

  23. #53

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Sunset. Twilight.
    Don’t over think it.

  24. #54

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by MeMeMe View Post
    Your lens will also reflect light outside the critical angle ..
    That's a new thought to me, thanks for bringing it up, but the lens is located inside the eye, so I'm not sure if you meant to say the Cornea is going to reflect light outside the critical angle, the Cornea is located the middle of the outer front layer part of the eye, forming like an entrance gate in front of the Iris, pupil, and lens which are all located inside the eye.

    Anyway, the eye lens itself is a clear and flexible material that has the properties to refract, divert and concentrate light ray in many degrees according to it's flexible shape status, but also it shall have a bit of reflective properties as well, so it should reflect some small part of the light ray in the opposite direction, onto the iris (the eye colour part) and to the outside of the eye through the pupil I guess, but can't say how significant the reflected part would be compared to the part that is diverted and concentrated towards the inside, onto the Retina, Macula and Fovea sections.

    Yes the Cornea and the lens have some reflective property like any other clear material, but that'd hardly form any considerable part of the eye defence mechanism IMO, and definitely not a UV filter by any means. Only with age and Cataract development the lens gets less clear and looks kind of yellowish, I think then it can form some kind of UV filter IMO.

    There is no UV filter in the eye AFAIK. The Iris is not considered any filter either, but it is more important than a filter, it is the shutter that dictates how much light comes inside the eye by contracting and dilating forming a wide or narrow Pupil (hole). It is the most valuable part of the eye defence system against strong visible light, that's why the eye doctor needs give you drops before the session, to dilate the Iris/pupil and stop it from contracting when shining the flashlight into the eye through the pupil to examine the Retina and other inside parts.

    Quote Originally Posted by MeMeMe View Post
    Your eyes do not get direct exposure for any period of time ... you look away, and other physical realities of your head also come into play.
    Of course, that's our automatic defence mechanism against strong visible rays of light, but the time of indirect exposure still counts, as even if we don't get direct exposure into our eyes, we do still take in all the reflected rays coming of all the objects in our field of view, especially the ground surface, and over time it counts, also the shape and colour of the ground and surrounding objects comes into play, the smoother the shape and the lighter the colour is, the more reflective it is (hence the big white satellite dish in my case).

  25. #55
    Flashaholic* xevious's Avatar
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    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by Midnight.Sun View Post
    xevious,

    Thanks for post 43#

    Do you think my one session of working under high summer sun for ~ 8 hours none stop, suddenly after years of not seeing much sun light (I also worked without drinking any water or food and hadn't eaten much in the day before so nutrition support was really bad) could all that have burned the retinal cells that have "transformed" on me (I think the doctor meant degenerated as he said they are thinning in retinal tissues when I asked him what does he mean by transformings). Can that one long acute sunlight session have speeded up or started my retinal degeneration, by definition retinal degeneration is a long term process, I had not had long periods of time accumulating gradual sunlight exposure, as I had not seen the sun normally over the last 7 years or so. The thing is that I had no signs of starting retinal degeneration in any of my previous eyes check up appointments, just the natural floaters of collagen fibbers due to the vitreous humorous liquidation thing, but I am also almost 39 years old now.
    This sunlight session story I have not shared with my doctor because before the appointment I was thinking I have retinal detachment, because of the sudden big blind spot in my peripheral field of view, and it turned out to be that I have also multiple smaller blind (Grey) spots all around my peripheral field of view. Only after the check up and the diagnostic with retinal transformations (doctor's literal word) that I started to link it to the sunlight exposure session, which I had before forgotten about it completely when I went to the check up, but I will raise the issue next time, I'm now about one month late on my supposed 6 month regular check ups date, and will have to wait at least another month to be given an appointment.

    Also do you have solid information about our natural UV filters inside our eyes, no matter how basic it is, what is it that you think this protection is, the eye lens? Cataract does make it yellowish and less clear, is that the UV filter you're talking about? I don't have Cataract.

    *I'm not seeking medical information here, just like to hear opinions or personal experiences or any knowledge information.
    Hello Midnight.Sun,
    You're welcome. As for your situation, I don't have medical knowledge sufficient enough to give you a solid answer. But in terms of practical understanding, I can't believe that a solid 8 hour day of high summer sun exposure caused you burned retinal cells. Our retinas do receive some short term damage from very bright light conditions, but will recover. One way you can visually see that is when you look at very bright light, then suddenly go into a dark room. You will see an after-image of the light for quite a while. Sometimes it can take up to an hour to fade off. The exposure you describe would not likely cause retinal detachment or degeneration.

    I've been fortunate enough to have near 20/20 eyesight and I'm in my mid 50's. But focus time has changed, and near sight is challenging (have to hold books further away). I also have floaters... and as far as I've heard most everyone does. Unfortunate side effect of aging. Also, if you're a pilot or do a lot of driving, the very frequent pressure changes and vibrations can exacerbate it. Just try to avoid looking at white paper and walls.

    Overall, what you're describing about your eye situation does sound like a premature condition for your age. I could be a genetic predisposition or perhaps even nutritional. What doctors will fail to do is consider the nutritional aspect. This is key, making sure you eat the right foods and supplements that contribute to healthy eye function. I've not studied this, but had come across some content on this a few years back. There's plenty of info on-line if you search. But for it to have effect will take some time. Meanwhile, if I were you I would visit an optometrist (eye doctor) and get a 2nd opinion. Good luck.
    Last edited by xevious; 05-30-2019 at 11:27 PM.
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  26. #56

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by Midnight.Sun View Post
    not sure if you meant to say the Cornea is going to reflect light outside the critical angle,

    Of course, that's our automatic defence mechanism against strong visible rays of light, but the time of indirect exposure still counts, as even if we don't get direct exposure into our eyes, we do still take in all the reflected rays coming of all the objects in our field of view, especially the ground surface, and over time it counts, also the shape and colour of the ground and surrounding objects comes into play, the smoother the shape and the lighter the colour is, the more reflective it is (hence the big white satellite dish in my case).
    .... did mean cornea.

    w.r.t. reflected rays coming off surfaces, read back through the thread. This all started not about long term exposure, but short term. We take in the reflected rays, over a limited angle, and with a limited aperture.

  27. #57

    Default LED lights damage eyes and disturb sleep, European health authority warns

    Hello xevious,

    Thanks for your opinion and good evaluation on the 8 hour exposure thing.

    looks like me and you have some common eye situations, I'm also fortunate with good eyesight 9.5/10 each eye, I guess that's 19/20 by your country's medical terms, but my focus is still working now at my late 30's or early 40's (basically my 40th birthday is a year and some months away).

    I have driven only cars and bicycles, I have driven cars of my ownership for more than 20 years, and had my fair share of pressure changes and a lot of vibrations (awful roads), but as it is the case with my sunlight long term exposure levels, I have not drived so much the past few years, only about 5% of the mileage I used to cover before 2011, and yet the floaters started in the recent years, but I know exactly how and when I finally triggered them out. The floaters started on me early although my 70 years old parents still don't have them, so it's not genetic nor natural premature, I caused them to myself with violent physical movement and the several falls on the back of my head through out my life, especially the first one at the age of 9 which was so strong, and near death experience, I passed away from morning till afternoon hours alone under the sun. Afterwards, the back of my brain kept frequently hurting me in full 24 hours cycles, every two weeks, or every 1 month sometimes, that continued for about 3 - 4 years then it all stopped at adolescence I guess. Then later I fell several times on the back of my head, either from on top of a ladder or walls and such things along the road of life, but I seem have gained strength in that area, stands up immediately a walk home for wound cleaning. But the violent movements that finally gave me the floaters and headache were the abnormal physical exercises I created for no logical reason 4 years ago, I was training like an Astronaut for impulsive reasons, I was possessed that chaos was coming towards my direction, and it was (I live in Syria), and was preparing for Armageddon I guess, but the storm of chaos eventually shifted away from me without needing my physical intervention lol.

    *Rest in peace everyone whom lost their lives fighting the right battle, and thanks for every effort that went in the right direction, and is still going on. The right direction in Syria is subtle, mainly it is the direction of the silent many who knows the real history of the region, not the Arabic Islamic history that the Arab Nationalists authoritarian regimes, especially in particular the most active Al- Baath party, the ruling party in Syria now, and in Iraq before 2003, whom imposed their version of history and their education system on us the past 70 years, with covert collaboration with the Arabian Gulf states and the various Islamic organisations and brotherhoods, and with official collaboration with the Islamic republic of Iran, and recently Islamic Turkey.

    Back to my optometrist, I didn't tell him anything about my physical activities, but he actually told me, he said the floaters are due to violent movements and I need to stay away from such activities. He was right, I tried to ask other questions, he said they were not a factor, and strictly insisted on his instructions.

    I did my homework, a lot of online searching, especially after the recent retinal degeneration (transformations) diagnostic, and I came across the nutritional factor, and although my overall diet is relatively considered very good, but I found out I was lacking the nutrients that are especially good for the Retina, and I fixed my diet accordingly the past 6 months, I can say that I'm feeling better now, my condition has stopped progressing so far, that I'm not in so much hurry to take my next eye exam appointment.

    As for a 2nd opinion, I was thinking of taking one when I was feeling worse, now I don't feel so urged, actually my doctor is considered the best in town, and the second reason is that I can barely stand one Iris dilating drops and flashlight exam every 6 month, I really think they are not good for my retina, my green eyes are so photophobic. So I'm now looking forward for the next generation of eye exams, the camera recording through the pupil, that does not require dilating the Iris and the use of flashlight, if I can manage to find this technology, anywhere nearby, I'll gladly take one of those for their higher accuracy and relief. That's the only situation I say no to flashlights lol.

    Thanks, good luck to you too.
    Last edited by Midnight.Sun; 05-31-2019 at 09:12 PM.

  28. #58
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    Default LED lights in your house can cause irreversible damage to the eyes and lead to a visi

    LED lights in your house can cause irreversible damage to the eyes and lead to a vision-robbing condition, French health authority warns...


    https://www.dailymail.co.uk/health/article-7032303/LED-lights-irreversibly-damage-eyes-French-health-authority-warns.html

  29. #59

    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    A recent, and interesting read on “light pollution” from National Geographic:

    https://www.nationalgeographic.com/s...on-dark-skies/

    Here in NYC, I can anecdotally relate first-hand, how the new LED street lamps absolutely wreck sleep. One solution being discussed for years now, and that I’ve seen implemented nowhere, is to add shielding.

    https://gothamist.com/2017/04/21/ben...lly_shield.php

    As an aside, don’t neglect to place your phones in “night shift” to sift blue light and shift its spectrum toward red at night. Mine does so automatically based on time or local sunset once I turned it on.

  30. #60
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    Default Re: LED lights damage eyes and disturb sleep, European health authority warns

    Quote Originally Posted by alphaBRAVO View Post
    As an aside, don’t neglect to place your phones in “night shift” to sift blue light and shift its spectrum toward red at night. Mine does so automatically based on time or local sunset once I turned it on.
    I run night shift full time by setting it to run from 3:00am to 2:59am. Turns off for 1 minute in the middle of the night every night. All TV's set to "WARM2" and computer monitor changed from factory 6500K to 5000K.

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