Kalle Rantaaho
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Let's hope it isn't true :o/
Damn...why can't anything good be simply good - without a terrible dark side? Now, some quite serious research imply that LED-lights may destroy the eyground in a similar way the sun does. That's bad news for people working at LED-lit computer screens and TVs. I'm not sure but the disease could be called "degeneration of makula" or something like that in english. It's the most common cause of blindness.
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Beepster
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Re: Let's hope it isn't true :o/
2015/01/01 18:35:03
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The condition is called macular degeneration. My mum has a bit of that going on. It creates "holes" in the sufferers vision. The brain compensates though if it's not a severe case so you still can see without a big hole in your vision but you would notice it when trying to focus on something like book. Thing is staring at any light source for extended periods is likely to have an effect. I can't imagine sitting at a computer is any worse than staring at an old style TV. I'd also think that the more modern LCD, LED, or whatever displays are a heckuva a lot better than the big old CRTs blasting away at your eyeballs all the time. Sounds like some scientists did a study blasting really bright LED lights into some poor woodland creature's eyeballs for 24/7 leading to inevitable results, some journalist got a hold of the data and twisted into some alarmist nonsense about how "COMPUTORBS R GONNA FRY YER EYEBALLZ!! EVERYBODY PANIC!!". Happens all the time. Someone wants to sell some newspapers or get some extra page clicks so they take a valid scientific study, make their owned uninformed and unscientific conclusions then regurgitate it to the public. Then if the people who did the study bother to correct the misinformation the media freaks who already have their money MAY post some kind of subtle retraction nobody will ever see and their audience repeat the faulty information in perpetuity making people do silly things like rub colloidial silver on their buttholes or punch themselves repeatedly in the groin to reinvigorate their sperm. If something in the news seems like it might be fer real and affect me personally I try to read about it from multiple sources and check out where the info originated from. Most of the time it turns out I'm not actually going to die a fiery death or have my eyes explode in their sockets.
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Beepster
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Re: Let's hope it isn't true :o/
2015/01/01 18:38:57
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And here's the Wiki link on macular degeneration... http://en.wikipedia.org/wiki/Macular_degeneration If you scroll down there are a couple pictures that show some kids. The first pic is the normal pic. The second is a simiulation of what someone with a bad case of macular degeneration might see. It's kind of like the ultimate "floater.
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kakku
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Re: Let's hope it isn't true :o/
2015/01/01 18:47:35
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This is bad news for many. I hope the research will be proven wrong.
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bapu
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Re: Let's hope it isn't true :o/
2015/01/01 20:34:21
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I have two floaters. Then I flush. Seriously, I have two floaters. One in each eye. I'll be 63 next month and I'm told it's not uncommon. They come and go. Usually last a day and I've gone months without seeing them.
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Beepster
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Re: Let's hope it isn't true :o/
2015/01/02 10:47:05
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bapu I have two floaters. Then I flush. Seriously, I have two floaters. One in each eye. I'll be 63 next month and I'm told it's not uncommon. They come and go. Usually last a day and I've gone months without seeing them.
A few years ago I was starting to get a ridiculous amount of floaters (the eyeball kind... not the terlet kind) that I thought my retinas were detaching (which is one of the things that can happen with my condition). I went to the eye doc and fortunately my eyeballs were not about to fall out of my head. Apparently they can actually see those little goobers floating around in there. He said eventually the brain gets used to them and tunes them out (kind of like how your brain will eventually stop making you hear chronic ear ringing). I got some glasses and eventually they "went away" even though they are probably still there. The hooman body tis a strange thing.
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sharke
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Re: Let's hope it isn't true :o/
2015/01/02 14:30:44
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I have floaters, quite a few of them. The optician has always told me they were completely normal. If you're worried about macular degeneration then take a lutein supplement. Another possible cause of blindness is toxoplasmosis, which you can get from contact with cat or dog feces. This is probably a lot easier than you think if you live with cats who jump up on counter tops after wading in cat litter. It can lay dormant in your body for decades before becoming active. My dad had it a few years ago. It started as a brown spot on his eye which the doctor could see as well. He ended up having injections in his eyeball and a horrible course of steroids.
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slartabartfast
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Re: Let's hope it isn't true :o/
2015/01/02 14:35:18
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☄ Helpfulby Beepster 2015/01/02 14:29:13
I think it is too early to say that macular degeneration is going to be the result of LED exposure. The work I can find is in albino rat models and examines relatively short term (although probably irreversible) retinal damage in some LED sources compared to CFL or incandescent lighting due to spikes in the blue portion of the spectrum. This is not massive stare-at-the-sun or nuclear-test-without-goggles exposure, but plausible illumination levels, so it is certainly worth further study. Tweaking or filtering the LED spectrum may be indicated in the long run, but a direct link to human disease is definitely not established. http://ehp.niehs.nih.gov/1307294/
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Beepster
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Re: Let's hope it isn't true :o/
2015/01/02 14:48:30
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Albino rats, eh? Their genetic similarities to humans are great for testing for obvious reasons but, and I'm no science talkin' dude here, considering one of the traits of albino anything is those freaky pink eyes lacking the pigment(?) of non albino eyes I wonder if they are the appropriate test animal for such studies. I seem to recall reading that just like with darker skin tones darker eyes are less susceptible to damage. So if there is a significant risk perhaps those with brown eyes are less likely to suffer ill effects. I have brown eyes so hopefully this won't affect me too much. Then again, as they say, I may just be full of... pigment.
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slartabartfast
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Re: Let's hope it isn't true :o/
2015/01/02 15:16:32
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Beepster Albino rats, eh? Their genetic similarities to humans are great for testing for obvious reasons but, and I'm no science talkin' dude here, considering one of the traits of albino anything is those freaky pink eyes lacking the pigment(?) of non albino eyes I wonder if they are the appropriate test animal for such studies. I seem to recall reading that just like with darker skin tones darker eyes are less susceptible to damage. So if there is a significant risk perhaps those with brown eyes are less likely to suffer ill effects. I have brown eyes so hopefully this won't affect me too much. Then again, as they say, I may just be full of...pigment.
Definitely albino rats (and people) are more susceptible to light injury than normal ones. But it is not so much the color of the iris (the part that we refer to when we say eye color) that is protective, but the pigmentation of the retina itself. Normally the black that you see when you look at the pupil is because the retinal pigmentepithelium absorbs most of the light that reaches it after passing through the sensory cell layers. Without melanocytes more light is scattered, and reflected, acuity is reduced and more damage is likely from the same amount of light entering the eye.
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Beepster
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Re: Let's hope it isn't true :o/
2015/01/02 15:32:42
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Thanks for the clarification. I really should brush up on my biology/anatomy knowledge. I guess that means I was wrong about eye color but still likely making a valid assumption about albino eyes perhaps not being well best suited for such a test. I've always had kind of fuzzy vision since I was a kid but I never started working with computers until I was in my late twenties at which point I've been sitting in fornt of the buggers almost non-stop. A decade later and I pretty much have the same level of fuzziness in my vision so I'm gonna continue not panicking. As far as eyes go I have bigger things to worry about like retinal detachment and considering dear old mumsie has the age related macular degeneration thing (which is hereditary AFAIK) I guess that as well. Meh. We all have a Best Before date. I'm already pretty curdled so I try not to make myself too insane about the "maybes" anymore.
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drewfx1
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Re: Let's hope it isn't true :o/
2015/01/02 16:47:21
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☄ Helpfulby bapu 2015/01/02 19:52:17
After long and careful studies involving mice, scientists have concluded that we should eat a diet rich in nuts, be careful about dairy products and get plenty of exercise by scampering around in the dark.
 In order, then, to discover the limit of deepest tones, it is necessary not only to produce very violent agitations in the air but to give these the form of simple pendular vibrations. - Hermann von Helmholtz, predicting the role of the electric bassist in 1877.
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Splat
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Re: Let's hope it isn't true :o/
2015/01/02 21:32:07
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craigb
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Re: Let's hope it isn't true :o/
2015/01/03 03:39:57
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Time for all of you to head over to Beyond My DAW!
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