computer help: How much UV exposure can you get from a Computer monitor? - Help.com

How much UV exposure can you get from a Computer monitor?

I have had many days when I don’t go outside, or I spend all day in front of the computer and then I look in the mirror and my face is red. My monitor is an LCD type.

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Since writing this post betta may have helped people, but has not within the last 4 days. betta is a verified member, has been around for 2 years, 9 months and has 31 posts and 1,747 replies to their name.

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Marconius offline Verified User (2 years, 11 months) Long Term User Shouts: 3 Add Friend #
San Francisco, CA, US | 2 years, 2 months ago (7 minutes after post)

LCD monitors don’t emit UV rays, nor do CRT monitors. Nothing can be transmitted in the UV wavelength, so CRT monitors are limited to not producing such wavelengths of radiation, and LCD monitors have nothing in them that can produce UV radiation.

Be sure to drink water and get up and move around every 15-20 minutes when constantly using the computer.

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~LazyDaze~ online Verified User (2 years, 5 months) Help.com Volunteer Moderator Long Term User Shouts: 357 Add Friend #
An Undisclosed Location | 2 years, 2 months ago (9 minutes after post)

Marconius, I just wrote nearly all what you said lol had to delete it :D
So I will add this instead, the only damage that can occure is to your eyes if you are useing a computer for long periods of time, you are supposed to take a rest from the screen every 15 mins or so

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betta offline Verified User (2 years, 9 months) Long Term User Shouts: 2 Add Friend #
Toronto, ON, CA | 2 years, 2 months ago (9 minutes after post)

OK thanks guys.

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betta offline Verified User (2 years, 9 months) Long Term User Shouts: 2 Add Friend #
Toronto, ON, CA | 2 years, 2 months ago (12 minutes after post)

“UV Protection: Reduces 99% of UV emission from the LCD screen which greatly reduces eye fatigue. Brightness will be reduced by 35 percent.”
-from http://cgi.cafr.ebay.ca/PRIVACY-SCREE…

so basically this point of reducing uv is a moot point?

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betta offline Verified User (2 years, 9 months) Long Term User Shouts: 2 Add Friend #
Toronto, ON, CA | 2 years, 2 months ago (28 minutes after post)

thanks. I have now done some research into how LCDs work and I see that there is no danger with LCDs other than straining your eyes, which is a danger even when reading books.

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nothx offline Verified User (2 years, 7 months) Long Term User Shouts: 1 Add Friend #
An Undisclosed Location | 2 years, 2 months ago (44 minutes after post)

UV rays from a monitor? Who told you that one? >.

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ronrumpf offline Verified User (3 years, 9 months) Long Term User Shouts: 1 Add Friend #
US | 2 years, 2 months ago (15 hours, 51 minutes after post)

I don’t know but, I worked in the computer business for over 20 years and ended up with cataracts. My mother also worked in front of a CRT for 20 years and also got cataracts. Genetics, who knows for sure? I know that when I worked in the TV industry one of the things we tested for was different types of radiation. With acceleration voltages in access of 25,000 volts we concerned. We didn’t find anything measurable…

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betta offline Verified User (2 years, 9 months) Long Term User Shouts: 2 Add Friend #
Toronto, ON, CA | 2 years, 2 months ago (17 hours, 30 minutes after post)

Sir James, no one told me either way. I was speculating and asking. Ronrumf some of the websites I found after I asked this question clarified quite a bit. Cathode ray tubes (CRTs) produce a lot of electro-magnetic frequencies (EMF), LCD monitors produce considerably less. The jury is out on EMF. There isn’t anything conclusively linking EMF to health problems, but it would be very difficult to test the effects of moderate exposure over a number of decades.

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ronrumpf offline Verified User (3 years, 9 months) Long Term User Shouts: 1 Add Friend #
US | 2 years, 2 months ago (17 hours, 59 minutes after post)

You’ll probably never see anything either. EMF from power lines, transformers and wireless devices have dragged on for years with no determination. It can easily be seen in high power devices such as microwave generators but, low power problems will have to be studied for many years to come…

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gypsie offline Verified User (2 years, 2 months) Long Term User Shouts: 1 Add Friend #
Rehoboth Beach, DE, US | 2 years, 2 months ago (1 day, 15 hours after post)

Red face can simply be your mirrors. It can also be as simple as your blood pressure gbeing elevated during long overexposed hours online. (for whatever reason your bp goes up online, hehe) Too much screen starage my new word can actually cause eplieptic convulsions if one is prone to them, as with any flashing screen. psp, texting, tv, other gaming systems, etc.. be cautious and monitor the amount of time you actually spend online. It actually can affect your health..look online for more infor with seizures related to over exposure online. Kinda creepy.

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Anonymous #
2 years, 2 months ago (2 days, 15 hours after post)

Don’t smoke pot while you’r working on your computer… :)

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betta offline Verified User (2 years, 9 months) Long Term User Shouts: 2 Add Friend #
Toronto, ON, CA | 2 years, 1 month ago (4 days, 4 hours after post)

Thanks. It definitely wasn’t that though.

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Je ne sais pa offline Verified User (2 years) Long Term User Shouts: 196 Add Friend #
An Undisclosed Location | 1 year, 7 months ago (6 months, 2 weeks after post)

umm i’m clueless. so i’m no expert but the eye thing is all i know.it messes with your eyes and your fingers it gives them cramps which you do feel. but makes it occur much ofter i think i’m trying to remember my computer class in high school. but thats all i remember.but if you do find something major give me a shout cause i spend way too much time on the compt too

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elliotri offline Unverified User #
An Unknown Location | 1 year, 7 months ago (7 months after post)

http://www.hps.org/publicinformation/… read what this site says…………And please tell me what you think………..if it is correct or wrong

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betta offline Verified User (2 years, 9 months) Long Term User Shouts: 2 Add Friend #
Toronto, ON, CA | 1 year, 6 months ago (7 months, 1 week after post)

elliotri wrote:
http://www.hps.org/publicinformation/… read what this site says…………And please tell me what you think………..if it is correct or wrong

Well the people who posted above might disagree that computers are not harmful to the eyes. I would be interested to know what studies are being done to corelate the incidence of cataracts and disease of the eyes with use of computers. The whole “no convincing scientific evidence” thing can be tricky. Some things because of their nature are hard to collect convincing scientific evidence for, but we should still err on the side of caution because of what can be inferred based on what is known. An example here is the negative effects of second hand smoke. Like computer monitor exposure it is hard to measure the amount of exposure one has over a long term period of time. All that can be done is playing with statistics.

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betta offline Verified User (2 years, 9 months) Long Term User Shouts: 2 Add Friend #
Toronto, ON, CA | 1 year, 6 months ago (7 months, 1 week after post)

I would probably infer that LCD Plasma and rear projection screens are safe, whereas CRTs and vacuum tube TVs are known to produce some radiation in the form of x-rays because that is what happens when you pass electrons through a vacuum and smash them against a screen.

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xdd0 offline Unverified User #
An Unknown Location | 8 months, 3 weeks ago (1 year, 5 months after post)
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ronrumpf offline Verified User (3 years, 9 months) Long Term User Shouts: 1 Add Friend #
US | 8 months, 3 weeks ago (1 year, 5 months after post)

Having worked in the TV industry Quality and Reliability lab, I can personally attest to the fact that no radiation is emitted from the front of a Cathode Ray Tube. We ran tests on all kinds and sizes. The test methods were using a hand held devise to detect x-rays and to make sure that the radiation wasn’t in a band not detected by the hand device we applied X-ray film to the front of the screen for 24 hours. Some of the larger CRTs required acceleration voltages of almost 30,000 volts. Nothing was ever detected by our testing…

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