Is the red beam of the supermarket' scanner harmful to the eyes?
952518
If you looked into it for a long period of time, you might have some damage; however, if it flashes into your eye briefly, it's nothing to worry about.  By comparison, looking at the sun would be a LOT worse for your eyes.
310583
It's just a light thing.  I've studied this for art more than for science...um, red light is the shortest wavelenth, so it's the first to be filtered out by distance.  If they're far enough away, only the blues and purple wavelengths make it to your eyes.
926398
That is a result of the flash being so quick that the eyes remain wide open and the inside of the eyes (retina) with its rich blood vessels is illuminated by the light. That makes the devilish looking red spots. People with light colored eyes are more likely to get a lot of light inside the pupil of their eyes and show up with red eyes.\n\nShooting the photo in available light not flash, using a camera that has a preflash to get the pupils to contract, or not shooting the picture head-on will avoid it. If you get it then photo imaging software can easily remove it.
291393
I would stay away from that.  If you're having trouble with your vision I would see an optometrist.  If you need to cleanse your eyes, I suggest visine, used according to the directions.
439638
no.  laser is of a lower frequency and less focus so it cannot distinguish information in density required for DVD reading.
1151404
If the deflection surface has any diffraction or diffusion to it, the light may just be redirected imperfectly. 12kV? Jumpin Gigawatts!
389582
if its on the white part, its fine. it happened to my mom once, made her eye look red. the doctor said that it was nothing to worry about. it went away after a few days, no meds.
422752
Smoke or fog will work.  There are also 100mW red lasers out there (wickedlasers.com should do the trick) that have some visibility in daylight, but this always depends on there being something (even the tiniest amount of dust) in the air to scatter off of.
511294
It indicates the person is near sighted.
92774
Radiowaves do hardly anything. No harm\nMicrowaves and infrared heat your body\nVisible light makes you visible and psychological healthy.\nUltraviolet can make you blind.\nX- and gamma rays go throught your body and make damage.\nFrom up to down, the more dangerous.\n\nFor all EMW: the more intensity, the more dangerous.\nthe more time of radiation, the more dangerous.\nThe closer to the source of the radiation, the more dangerous.
432829
Yes,it will effect ur eye vision it called CVS. All those hours we spend at the computer, straining our eyes, causes a condition known as Computer Vision Syndrome (CVS). CVS is characterized by eye strain associated with prolonged use of computers, with symptoms which include eye fatigue, dryness of the eyes etc. A number of investigations have indicated that these symptoms occur in 75-90% of computer users.Computer images are created from thousands of tiny dots so there is no distinct image for your eye to actually focus on. You have to focus and refocus to keep the images sharp and after two hours you end up with the same kind of repetitive stress on your eye muscles as that caused by the keyboard on your wrists.Make sure your visit the optometrist regularly to get your eyes tested for Computer Vision Syndrome. He or she may prescribe special glasses and/or an anti-glare screen filter or make other ergonomic recommendations.
124053
One, you can eat LOTS of carrots!  They are totally good for optical health.  Also, don't stay up too late, or read in bad light.  That makes them red!  If you ever get in a shower, try to prevent anything from getting in them.  Also, if none of this works, you could try eye drops.
796125
Let's see...they shoot a laser beam in your eye & attempt to move parts of the eyeballs interior with a beam of light.  At the same time a nurse walks by & drops a tray of just sterilized stainless steel equiptment that makes a huge clamouring boom.  The doctor flinches and  now you're blind.\n   Sure it's 100% safe.\nNothin' to worry about.\nPiece o' cake.\n     "SEE" what "EYE" mean?
37596
You could use VISINE eye drops for redness...caused by reading too much, etc.
517036
not dangerous but it does load a ton of useless junk / spyware on your computer\n\ngo to oldversion.com and get aim 5.2.3292, and download aimutation 1.3.2 from softpedia
1124923
Good question. Probably not good for you.\n\nI had a groth on my eye for several years that I wouldn't let the doctor surgically remove. Then I got my first computer with a huge Trinitron monitor...Funny thing happened: After 2 months the groth was totally gone. I suspect the radiation from the monitor killed it....That was a GOOD side effect.\n\nBut now I use an LCD monitor, cuz if a regular monitor can do that to the groth I had....Then I'm sure it can do harm as well.
1080355
The Braille on the drive-up ATM's says "You should not be driving"\n\nWhat is just as funny - are the drive-up fast food windows that have the menu in Braille.