daveh75
Well-known member
This is the web site for old news, first the Canadian tv video on hdmi cables from years ago, now a ABC story from a month or two ago, probably based on a wired article from over a decades ago.
With no fee injury lawyers who needs proof, crash the car on the way home form watching a 3D film at the cinema, bought a 3D TV and have a child that is cross-eyed. Some one must be to blame, you deserve compensation. Maybe they will introduce liability wavers for 3D viewers to sign.
With no fee injury lawyers who needs proof, crash the car on the way home form watching a 3D film at the cinema, bought a 3D TV and have a child that is cross-eyed. Some one must be to blame, you deserve compensation. Maybe they will introduce liability wavers for 3D viewers to sign.
I can believe it. Rapidly changing pictures from one eye to the other. Hardly natural to watch, I could see many people getting seriously bad headaches after a week or so of normal viewing times
aliEnRIK:I can believe it. Rapidly changing pictures from one eye to the other. Hardly natural to watch, I could see many people getting seriously bad headaches after a week or so of normal viewing times
Can't see it catching on myself. LOL.
Can't see it catching on myself. LOL.
aliEnRIK:I can believe it. Rapidly changing pictures from one eye to the other. Hardly natural to watch, I could see many people getting seriously bad headaches after a week or so of normal viewing times
I think developing permanent problems is incredibly unlikely. The scare seems to come from one legal case in Japan decades ago where it was claimed a 5 year old went permanently cross-eyed.
The eye-brain can not normally dis-join the link between convergence and accommodation so ends up bobing between the two when they do not tally. 3D tv works by changing convergence but does not change the focal distance to the screen. So many people may get eyestrain asthenopia (headache, tearing, eye smarting, blurred vision, double vision, ocular itching, photophobia, blinking, nausea, eye heaviness). The few small studies seem to indicate that having objects jumping out at you are the worst. A small study of 22 students I read had 10 shift to hypermetropic and no adverse effects, while 12 shift to myopic with increased risk of eye-strain with pro-longed viewing. Another study had people with glasses having higher instances of getting eye-strain, and some of those with contact lenses getting irritation of the eye with prolonged viewing.
As well as problems with eyes, you also have problems with ears. People with inner-ear vestibular disorders or infections are at increased risk of motion sickness. As the eyes say your moving, the ears say your not, and the brain leaps to the conclusion you are hallucinating due to eating poison, cue nausea.
I can see manufactures recommending viewing only for a few hours at a time, and stopping viewing if you start getting a headache or feeling sick.
As well as people with only vision in one eye not seeing the 3D effect, estimates are up to 5-8% being stereo blind, they see with both eyes but do not combine depth cues, and anywhere from 6-30% with some impairment to stereo vision so not seeing the best effect.
I think developing permanent problems is incredibly unlikely. The scare seems to come from one legal case in Japan decades ago where it was claimed a 5 year old went permanently cross-eyed.
The eye-brain can not normally dis-join the link between convergence and accommodation so ends up bobing between the two when they do not tally. 3D tv works by changing convergence but does not change the focal distance to the screen. So many people may get eyestrain asthenopia (headache, tearing, eye smarting, blurred vision, double vision, ocular itching, photophobia, blinking, nausea, eye heaviness). The few small studies seem to indicate that having objects jumping out at you are the worst. A small study of 22 students I read had 10 shift to hypermetropic and no adverse effects, while 12 shift to myopic with increased risk of eye-strain with pro-longed viewing. Another study had people with glasses having higher instances of getting eye-strain, and some of those with contact lenses getting irritation of the eye with prolonged viewing.
As well as problems with eyes, you also have problems with ears. People with inner-ear vestibular disorders or infections are at increased risk of motion sickness. As the eyes say your moving, the ears say your not, and the brain leaps to the conclusion you are hallucinating due to eating poison, cue nausea.
I can see manufactures recommending viewing only for a few hours at a time, and stopping viewing if you start getting a headache or feeling sick.
As well as people with only vision in one eye not seeing the 3D effect, estimates are up to 5-8% being stereo blind, they see with both eyes but do not combine depth cues, and anywhere from 6-30% with some impairment to stereo vision so not seeing the best effect.
Andrew Everard:What's binocular dysphoria, gel?
I think it is a wikipedia term, coined from a old wired magazine article. So probably not in the Oxford English Dictionary yet.
I think it is a wikipedia term, coined from a old wired magazine article. So probably not in the Oxford English Dictionary yet.
knightout:I think it is a wikipedia term, coined from a old wired magazine article. So probably not in the Oxford English Dictionary yet.
I think given its provenance, it's more likely to appear in the AND first, before it gets to the OED.
I think given its provenance, it's more likely to appear in the AND first, before it gets to the OED.
knightout:
aliEnRIK:I can believe it. Rapidly changing pictures from one eye to the other. Hardly natural to watch, I could see many people getting seriously bad headaches after a week or so of normal viewing times
I think developing permanent problems is incredibly unlikely. The scare seems to come from one legal case in Japan decades ago where it was claimed a 5 year old went permanently cross-eyed.
The eye-brain can not normally dis-join the link between convergence and accommodation so ends up bobing between the two when they do not tally. 3D tv works by changing convergence but does not change the focal distance to the screen. So many people may get eyestrain asthenopia (headache, tearing, eye smarting, blurred vision, double vision, ocular itching, photophobia, blinking, nausea, eye heaviness). The few small studies seem to indicate that having objects jumping out at you are the worst. A small study of 22 students I read had 10 shift to hypermetropic and no adverse effects, while 12 shift to myopic with increased risk of eye-strain with pro-longed viewing. Another study had people with glasses having higher instances of getting eye-strain, and some of those with contact lenses getting irritation of the eye with prolonged viewing.
As well as problems with eyes, you also have problems with ears. People with inner-ear vestibular disorders or infections are at increased risk of motion sickness. As the eyes say your moving, the ears say your not, and the brain leaps to the conclusion you are hallucinating due to eating poison, cue nausea.
I can see manufactures recommending viewing only for a few hours at a time, and stopping viewing if you start getting a headache or feeling sick.
As well as people with only vision in one eye not seeing the 3D effect, estimates are up to 5-8% being stereo blind, they see with both eyes but do not combine depth cues, and anywhere from 6-30% with some impairment to stereo vision so not seeing the best effect.
Mate, your posts rarely dissapoint
If there was THANKS button id have clicked it
aliEnRIK:I can believe it. Rapidly changing pictures from one eye to the other. Hardly natural to watch, I could see many people getting seriously bad headaches after a week or so of normal viewing times
I think developing permanent problems is incredibly unlikely. The scare seems to come from one legal case in Japan decades ago where it was claimed a 5 year old went permanently cross-eyed.
The eye-brain can not normally dis-join the link between convergence and accommodation so ends up bobing between the two when they do not tally. 3D tv works by changing convergence but does not change the focal distance to the screen. So many people may get eyestrain asthenopia (headache, tearing, eye smarting, blurred vision, double vision, ocular itching, photophobia, blinking, nausea, eye heaviness). The few small studies seem to indicate that having objects jumping out at you are the worst. A small study of 22 students I read had 10 shift to hypermetropic and no adverse effects, while 12 shift to myopic with increased risk of eye-strain with pro-longed viewing. Another study had people with glasses having higher instances of getting eye-strain, and some of those with contact lenses getting irritation of the eye with prolonged viewing.
As well as problems with eyes, you also have problems with ears. People with inner-ear vestibular disorders or infections are at increased risk of motion sickness. As the eyes say your moving, the ears say your not, and the brain leaps to the conclusion you are hallucinating due to eating poison, cue nausea.
I can see manufactures recommending viewing only for a few hours at a time, and stopping viewing if you start getting a headache or feeling sick.
As well as people with only vision in one eye not seeing the 3D effect, estimates are up to 5-8% being stereo blind, they see with both eyes but do not combine depth cues, and anywhere from 6-30% with some impairment to stereo vision so not seeing the best effect.
Mate, your posts rarely dissapoint
If there was THANKS button id have clicked it
aliEnRIK:I can believe it. Rapidly changing pictures from one eye to the other. Hardly natural to watch, I could see many people getting seriously bad headaches after a week or so of normal viewing times
I have been working 3D CAD (computer design) for more than 20 years with no headaches (unless I had too many beers the night before) ....
if you get bad headaches, perhaps your underpants are too tight?
I have been working 3D CAD (computer design) for more than 20 years with no headaches (unless I had too many beers the night before) ....
if you get bad headaches, perhaps your underpants are too tight?
dim_span:
aliEnRIK:I can believe it. Rapidly changing pictures from one eye to the other. Hardly natural to watch, I could see many people getting seriously bad headaches after a week or so of normal viewing times
I have been working 3D CAD (computer design) for more than 20 years with no headaches (unless I had too many beers the night before) ....
if you get bad headaches, perhaps your underpants are too tight?
3D CAD and 3D tv are 2 entirely different things
aliEnRIK:I can believe it. Rapidly changing pictures from one eye to the other. Hardly natural to watch, I could see many people getting seriously bad headaches after a week or so of normal viewing times
I have been working 3D CAD (computer design) for more than 20 years with no headaches (unless I had too many beers the night before) ....
if you get bad headaches, perhaps your underpants are too tight?
3D CAD and 3D tv are 2 entirely different things
Mitsubishi seems somewhat paranoid their 3D TVs have a warning in the manual. 3D pictures must not be viewed by children under the age of 6.
There is a 3D safety document by the 3D consortium in Japan that some manufactures refer to, when asked about health issues, but I can not find a copy to read, it seems to be consortium members only.
For home cinema there maybe a problem. When the 3D film is remastered for the small screen ideally the parallax should be changed, increased to achieve the same 3D effect on a small screen, otherwise 3D on a small screen is going to be a lot less impressive than at the cinema. If the parallax is increased but then shown on a home cinema projector screen the parallax is going to be larger than the original theatrical version, for even more impressive or exaggerated 3D effects, but possibly more risk of eyestrain.
There is a 3D safety document by the 3D consortium in Japan that some manufactures refer to, when asked about health issues, but I can not find a copy to read, it seems to be consortium members only.
For home cinema there maybe a problem. When the 3D film is remastered for the small screen ideally the parallax should be changed, increased to achieve the same 3D effect on a small screen, otherwise 3D on a small screen is going to be a lot less impressive than at the cinema. If the parallax is increased but then shown on a home cinema projector screen the parallax is going to be larger than the original theatrical version, for even more impressive or exaggerated 3D effects, but possibly more risk of eyestrain.
This is what the manual for the new Samsung C7000 series 3D TVs says:
Warning
* 3D PICTURES MUST NOT BE VIEWED BY CHILDREN UNDER THE AGE OF 6
* Parents' careful supervision is required particularly when children or
teenagers view 3D images
*Photosensitive seizure warning... some viewers may experience an
epileptic seizure or stroke when exposed to certain flashing images or
lights... even those without a personal history may have an undiagnosed
condition..* If you experience any of the following symptoms,
immediately stop watching 3D pictures an consult a medical specialist
(1) altered vision; (2) lightheadedness (3) dizziness (4) involuntary
movements such as eye or muscle twitching (5) confusion (6) nausea (7)
loss of awareness (8) convulsions (9) cramps; and/or (10)
disorientation. Parents should monitor and ask their children about the
symptoms - children and teenagers may be more likely than adults to
experience these symptoms...
* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
* Note that watching TV while watching 3D Active glasses for an extended
period of time may cause a headache or fatigue
* Some 3D pictures may startle viewers. The pregnant, elderly, epileptic
and those suffering from serious physical conditions are advised to
avoid using the unit's 3D functionality...
Warning
* 3D PICTURES MUST NOT BE VIEWED BY CHILDREN UNDER THE AGE OF 6
* Parents' careful supervision is required particularly when children or
teenagers view 3D images
*Photosensitive seizure warning... some viewers may experience an
epileptic seizure or stroke when exposed to certain flashing images or
lights... even those without a personal history may have an undiagnosed
condition..* If you experience any of the following symptoms,
immediately stop watching 3D pictures an consult a medical specialist
(1) altered vision; (2) lightheadedness (3) dizziness (4) involuntary
movements such as eye or muscle twitching (5) confusion (6) nausea (7)
loss of awareness (8) convulsions (9) cramps; and/or (10)
disorientation. Parents should monitor and ask their children about the
symptoms - children and teenagers may be more likely than adults to
experience these symptoms...
* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
* Note that watching TV while watching 3D Active glasses for an extended
period of time may cause a headache or fatigue
* Some 3D pictures may startle viewers. The pregnant, elderly, epileptic
and those suffering from serious physical conditions are advised to
avoid using the unit's 3D functionality...
The_Lhc
Well-known member
Andrew Everard:* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
Please, this is an old wives tale isn't it? Don't tell me my mum was right all along!
extended period may weaken your eyesight
Please, this is an old wives tale isn't it? Don't tell me my mum was right all along!
John Duncan
Well-known member
the_lhc:
Andrew Everard:* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
Please, this is an old wives tale isn't it? Don't tell me my mum was right all along!
Well I've found she was wrong on the other warnings she gave me about my eyesight.
Andrew Everard:* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
Please, this is an old wives tale isn't it? Don't tell me my mum was right all along!
Well I've found she was wrong on the other warnings she gave me about my eyesight.
Andrew Everard:
This is what the manual for the new Samsung C7000 series 3D TVs says:
Warning
* 3D PICTURES MUST NOT BE VIEWED BY CHILDREN UNDER THE AGE OF 6
* Parents' careful supervision is required particularly when children or
teenagers view 3D images
*Photosensitive seizure warning... some viewers may experience an
epileptic seizure or stroke when exposed to certain flashing images or
lights... even those without a personal history may have an undiagnosed
condition..* If you experience any of the following symptoms,
immediately stop watching 3D pictures an consult a medical specialist
(1) altered vision; (2) lightheadedness (3) dizziness (4) involuntary
movements such as eye or muscle twitching (5) confusion (6) nausea (7)
loss of awareness (8) convulsions (9) cramps; and/or (10)
disorientation. Parents should monitor and ask their children about the
symptoms - children and teenagers may be more likely than adults to
experience these symptoms...
* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
* Note that watching TV while watching 3D Active glasses for an extended
period of time may cause a headache or fatigue
* Some 3D pictures may startle viewers. The pregnant, elderly, epileptic
and those suffering from serious physical conditions are advised to
avoid using the unit's 3D functionality...
that just about covers everything , no lawsuits for samsung to worry about ...
This is what the manual for the new Samsung C7000 series 3D TVs says:
Warning
* 3D PICTURES MUST NOT BE VIEWED BY CHILDREN UNDER THE AGE OF 6
* Parents' careful supervision is required particularly when children or
teenagers view 3D images
*Photosensitive seizure warning... some viewers may experience an
epileptic seizure or stroke when exposed to certain flashing images or
lights... even those without a personal history may have an undiagnosed
condition..* If you experience any of the following symptoms,
immediately stop watching 3D pictures an consult a medical specialist
(1) altered vision; (2) lightheadedness (3) dizziness (4) involuntary
movements such as eye or muscle twitching (5) confusion (6) nausea (7)
loss of awareness (8) convulsions (9) cramps; and/or (10)
disorientation. Parents should monitor and ask their children about the
symptoms - children and teenagers may be more likely than adults to
experience these symptoms...
* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
* Note that watching TV while watching 3D Active glasses for an extended
period of time may cause a headache or fatigue
* Some 3D pictures may startle viewers. The pregnant, elderly, epileptic
and those suffering from serious physical conditions are advised to
avoid using the unit's 3D functionality...
that just about covers everything , no lawsuits for samsung to worry about ...
scene
Well-known member
maxflinn:Andrew Everard:
This is what the manual for the new Samsung C7000 series 3D TVs says:
Warning
* 3D PICTURES MUST NOT BE VIEWED BY CHILDREN UNDER THE AGE OF 6
* Parents' careful supervision is required particularly when children or
teenagers view 3D images
*Photosensitive seizure warning... some viewers may experience an
epileptic seizure or stroke when exposed to certain flashing images or
lights... even those without a personal history may have an undiagnosed
condition..* If you experience any of the following symptoms,
immediately stop watching 3D pictures an consult a medical specialist
(1) altered vision; (2) lightheadedness (3) dizziness (4) involuntary
movements such as eye or muscle twitching (5) confusion (6) nausea (7)
loss of awareness (8) convulsions (9) cramps; and/or (10)
disorientation. Parents should monitor and ask their children about the
symptoms - children and teenagers may be more likely than adults to
experience these symptoms...
* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
* Note that watching TV while watching 3D Active glasses for an extended
period of time may cause a headache or fatigue
* Some 3D pictures may startle viewers. The pregnant, elderly, epileptic
and those suffering from serious physical conditions are advised to
avoid using the unit's 3D functionality...
that just about covers everything , no lawsuits for samsung to worry about ...
And the Nintendo Wii has a pretty similar warning (go look it up). As max says, this is more to prevent law suits in the US of A and other litigious countries... "Little Johnnie was a good kid until he was four, when he started spending 22 hours a day sitting 18 inches from that new 3D TV, just drinking cola and burgers, then his eyesight deteriorated and his weight ballooned. It's all that darn TV's fault..."
This is what the manual for the new Samsung C7000 series 3D TVs says:
Warning
* 3D PICTURES MUST NOT BE VIEWED BY CHILDREN UNDER THE AGE OF 6
* Parents' careful supervision is required particularly when children or
teenagers view 3D images
*Photosensitive seizure warning... some viewers may experience an
epileptic seizure or stroke when exposed to certain flashing images or
lights... even those without a personal history may have an undiagnosed
condition..* If you experience any of the following symptoms,
immediately stop watching 3D pictures an consult a medical specialist
(1) altered vision; (2) lightheadedness (3) dizziness (4) involuntary
movements such as eye or muscle twitching (5) confusion (6) nausea (7)
loss of awareness (8) convulsions (9) cramps; and/or (10)
disorientation. Parents should monitor and ask their children about the
symptoms - children and teenagers may be more likely than adults to
experience these symptoms...
* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
* Note that watching TV while watching 3D Active glasses for an extended
period of time may cause a headache or fatigue
* Some 3D pictures may startle viewers. The pregnant, elderly, epileptic
and those suffering from serious physical conditions are advised to
avoid using the unit's 3D functionality...
that just about covers everything , no lawsuits for samsung to worry about ...
And the Nintendo Wii has a pretty similar warning (go look it up). As max says, this is more to prevent law suits in the US of A and other litigious countries... "Little Johnnie was a good kid until he was four, when he started spending 22 hours a day sitting 18 inches from that new 3D TV, just drinking cola and burgers, then his eyesight deteriorated and his weight ballooned. It's all that darn TV's fault..."
JohnDuncan:the_lhc:
Andrew Everard:* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
Please, this is an old wives tale isn't it? Don't tell me my mum was right all along!
Well I've found she was wrong on the other warnings she gave me about my eyesight.
LOL, me, blind as a bat.
Andrew Everard:* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
Please, this is an old wives tale isn't it? Don't tell me my mum was right all along!
Well I've found she was wrong on the other warnings she gave me about my eyesight.
LOL, me, blind as a bat.
The_Lhc
Well-known member
JohnDuncan:the_lhc:
Andrew Everard:* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
Please, this is an old wives tale isn't it? Don't tell me my mum was right all along!
Well I've found she was wrong on the other warnings she gave me about my eyesight.
Given that I have a working focal range of no more than about 8 inches (matron), I couldn't possibly comment.
Andrew Everard:* Note that watching TV while sitting too close to the screen for an
extended period may weaken your eyesight
Please, this is an old wives tale isn't it? Don't tell me my mum was right all along!
Well I've found she was wrong on the other warnings she gave me about my eyesight.
Given that I have a working focal range of no more than about 8 inches (matron), I couldn't possibly comment.
Have put in calls to Samsung, Sony, Philips and Panasonic to find out if they've got anything useful to add to the subject. Will report when I hear back.
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