sonofdbn Posted August 2, 2007 Posted August 2, 2007 I heard from some friends that flat panels are better than CRT TVs for kids' eyes. When I asked about the source of this, they said it's well-known, but I must admit I'd never heard this before. Is there any fact behind this theory?
DanDon Posted August 2, 2007 Posted August 2, 2007 If i'm not wrong, CRT TV is bad for eyes not just for kids due to high radiation produced by the CRT. But of course, the radiation is still within the safety limit as specified in the product safety standard. I think Plasma panel also has high radiation. LCD panel is better for eyes due to lower radiation.
DanDon Posted August 2, 2007 Posted August 2, 2007 As long as sit far away from CRT TV with enough light when watching TV programme, it should not do much harm to the eyes. I started to wear glasses after ORD as I watched 29" CRT TV in a dim light 2m away from the sit. :(
kzone Posted August 2, 2007 Posted August 2, 2007 cant comment on tvs as I dont have a flat panel tv.. but as far as monitors are concerned, I find that my eyes are more strained when after I switched to LCDs.. my previous CRTs have those tinted screen... that probably helped though...
varun1624705824 Posted August 2, 2007 Posted August 2, 2007 Stands to reason... CRTs involve flicker which causes eye strain. LCD technology is different - no flicker. - V.
dbchoong Posted August 2, 2007 Posted August 2, 2007 I think kids eyesight deteriorate due to prolonged viewing rather than whether its CRT or flat panel. Refresh rates also matter I think - many older CRTs were not 100Hz, but these days most CRTs are already 100hz refresh rate. If kids practiced good viewing habits - eg. rest eyes occasionally by looking at far away objects, watch at decent distance - it might help. :)
dannyhgt Posted August 2, 2007 Posted August 2, 2007 I heard that the PJ screen is most friendly to eyes. No radiation whatsoever.
dmateo Posted August 4, 2007 Posted August 4, 2007 I was under the view that the problem did not stem much stem from the technology, rather the duration and distance that is used when viewing the display. Of course there are difference on the technology as well such as CRT, plasma and LCD. I believe CRT is much more taxing to eyes due to the flicker issue and the way they form the picture. LCD and Plasma will be better than CRT. Projector is probably the best as it is not an active source of light, but rather a reflection of light that is beamed into a surface. But I tend to agree that duration/distance is more of a problem that cause eyes damaged. ;D
Jagdpanzer Posted August 5, 2007 Posted August 5, 2007 I wonder if there are any published scientific papers that say LCD is better that CRT for kids' eyes. I am refering to 100 Hz CRT, not those old CRT. I am really tempted to buy a LCD for my boy but my philips Pixel Plus just won't breakdown.
Phaton Posted August 5, 2007 Posted August 5, 2007 If i'm not wrong, CRT TV is bad for eyes not just for kids due to high radiation produced by the CRT. But of course, the radiation is still within the safety limit as specified in the product safety standard. I think Plasma panel also has high radiation. LCD panel is better for eyes due to lower radiation. Sorry to qualify this pt. Plasma only emits little ultra violet radiation(Like Fluorescent lamp) that does not transmit beyond a range of 1 to 2 Inch from screen surface. The reason Plasma screens light-up are due to individual gas chambers on the glass panel being filled with conductive gas which emit light when expose to electric current. Just for peace of mind, a 42 Inch Plasma doesn't even emit enough radiation to be even close to that of a 14 Inch CRT monitor.
Guest queks Posted August 5, 2007 Posted August 5, 2007 IMHO, I think 2 thing that cause strain to eyes is flickering and brightness. Exposing to both thing for prolong period will be unhealthy to the eyes. old CRT is in 50Hz, i can see the flickering when looking at them in store. I also hate white and bright screen (reason why i alway choose black theme for the forum :) )
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