Yleistä keskustelua musiikista ›

M-Juhana: Ei liity aiheeseen, mutta just tuli telkassa juttua et aasiassa on ihmisillä huonompi näkö. Lapsista isolla prosentilla on silmälasit. Genetiikkaa?
 
Tuo huononäköisyys ei välttämättä liity genetiikkaan.
Esim.
'- - But she added: Further studies are needed before coming to any conclusion on whether everyday exposure to LED light, through using computers and phones, can lead to retinal damage in the long term. - - '
Apple and Samsung declined to comment on the study.
(Read more: http://metro.co.uk/2013/09/10/mobil … et-screens-damage-eyesight-3956463/)
 
Vanhempia tutkimuksia on, että kuvaputket vahingoittavat silmää. Lapsella silmä mukautunee tilanteeseen. Kuvaputken elektroni, jotka ampuvat kuvan näytölle eivät pysähdy näyttöön vaan jatkavat matkaa lähellä istuvan katsojan silmiin. Laitan lähteen myöhemmin.
 
Viime tutkimus, joka sivusi aihetta, jonka muista lukeneeni esitti ongelman, että kun keskitytään katsomaan lähelle, silmä ei lepää. Silmä lepää kun se katsoo kauas. Ja tästä aiheutuu ehkä näön heikkenemistä. Laitan lähteen myöhemmin.
 
Mitenköhän sähkö-/elektromagneettinen säteily? Voiko se vahingoittaa kuuloa?
 
We put this question to Andy Karam, adjunct professor at the Rochester Institute of Technology...
 
"Andy - Televisions really do give off radiation. But having said that, it's only a little bit of radiation and it's not that dangerous. What happens is that anything with a cathode ray tube, a tube where you shoot high-energy electrons at some sort of screen, when those electrons hit the screen, they give off very low energy x-ray radiation. This is the same way that x-rays are produced in regular x-ray tubes. So, if you're sitting close to a cathode ray tube, whether a computer monitor, a television screen, a radar set or anything else with that type of technology, you're going to be getting low doses of x-ray radiation."
(http://www.thenakedscientists.com/HTML/questions/question/2417/), nb. kaikki on aina pientä ja vaaratonta, jos kyynisiä ollaan
 
" For years, doctors have wondered if monitors might cause permanent vision damage. It's a tempting charge. Consider that the prevalence of myopia has risen by two-thirds in the United States since the 1970s and that the shocking spread of nearsightedness coincides almost exactly with the perfusion of computers in our workplaces and homes. Several studies from the 1980s and early '90s found specific correlations between myopia and computer use or sitting close to the television. There's also evidence from extremely late adopters: Myopia among Alaskan Inuits, for instance, reportedly skyrocketed after they were introduced to television."
(http://www.slate.com/articles/healt … nce/2010/03/apple_on_your_eyes.html) nb. artikkelissa lähdeviitteet
 
"Women are more likely than men to suffer with eye problems, with a quarter reporting that their eyes feel dry and gritty on a daily basis, and one in 10 waking up with sore eyes.
The survey also highlighted the nations top 10 lifestyle habits that can negatively affect eye health:
1. Not resting eyes regularly when using screens (43 per cent)
2. Using a computer for more than six hours per day (40 per cent)
3. Watching television in the dark (39 per cent)
4. Not wearing sunglasses with high UV protection (38 per cent)
5. Drinking alcohol (28.3 per cent)
6. Spending a lot of time in air conditioned / heated environments (19 per cent)
7. Leaving make-up on overnight (10 per cent)
8. Using a smartphone or tablet in bed (12 per cent)
9. Sleeping in contact lenses (12 per cent)
10. Applying eye liner to the inner eye (seven per cent)
" (http://www.pharmacymagazine.co.uk/dry-eye-could-affect-one-in-three)
 
"Computer Vision Syndrome May Be Affecting Your Child
 
Q: What are some easy ways to help protect their eyes?
A: Here are three easy tips to help protect your childs eyes happy when they use tablets and other digital devices:
 
- Follow the 20/20/20 rule. Set a timer if you need to, but its really important for them to take a break about every 20 minutes and stare at something 20 feet away for about 20 seconds. This only a guideline, but doing so refreshes the eyes and may help avoid CVS.
 
- Keep an arms distance. The closer your child holds their tablet to their face, the harder their eyes will have to work. The proper distance is about an arms length away. If you notice them holding things a lot closer, it could be due to a vision problem.
- Have a workstation that is kid friendly. Kids are smaller and often need a smaller place to do their work. When kids are slouched on the couch or craning their necks forward at a computer station that is too large for them, it contributes to stain."
(http://www.parenthood.com/article/c … me_may_be_affecting_your_child.html)