Date: 11/05/2017 11:58:40
From: buffy
ID: 1063944
Subject: Blue light filter spectacles
If you are told you need blue light filter on your glasses (and it’s the current Big Thing for upselling), you should read this first:
Abstract
The introduction of low energy lighting and the widespread use of computer and mobile technologies have changed the exposure of human eyes to light. Occasional claims that the light sources with emissions containing blue light may cause eye damage raise concerns in the media. The aim of the study was to determine if it was appropriate to issue advice on the public health concerns. A number of sources were assessed and the exposure conditions were compared with international exposure limits, and the exposure likely to be received from staring at a blue sky. None of the sources assessed approached the exposure limits, even for extended viewing times.
From: Low-energy light bulbs, computers, tablets and the blue light hazard
The whole lot is interesting, but particularly the Discussion.
Date: 11/05/2017 12:07:12
From: Michael V
ID: 1063946
Subject: re: Blue light filter spectacles
Thanks.
:)
I’ll try not to get up-sold on the next pair of spectacles I have to buy. (Fairly soon, as the current spectacles are getting quite scratched.
Date: 11/05/2017 13:21:49
From: mollwollfumble
ID: 1063956
Subject: re: Blue light filter spectacles
buffy said:
If you are told you need blue light filter on your glasses (and it’s the current Big Thing for upselling), you should read this first:
Abstract
The introduction of low energy lighting and the widespread use of computer and mobile technologies have changed the exposure of human eyes to light. Occasional claims that the light sources with emissions containing blue light may cause eye damage raise concerns in the media. The aim of the study was to determine if it was appropriate to issue advice on the public health concerns. A number of sources were assessed and the exposure conditions were compared with international exposure limits, and the exposure likely to be received from staring at a blue sky. None of the sources assessed approached the exposure limits, even for extended viewing times.
From: Low-energy light bulbs, computers, tablets and the blue light hazard
The whole lot is interesting, but particularly the Discussion.
Thanks. There are some people who swear that UV blockers help reduce glare from reflections off water and snow. Blue is next to UV in the spectrum, so an ideal UV blocker will block blue to some extent.
Date: 11/05/2017 21:54:22
From: buffy
ID: 1064020
Subject: re: Blue light filter spectacles
As they say there, this research has nothing to do with mucking up circadian rhythm with blue light before bed. There is other research that does show that happens and it’s best to lay off the mobile phone etc for a couple of hours before bed. I guess the filters might be useful if you can’t/won’t turn off your screens so you get proper sleep.
Date: 11/05/2017 22:22:38
From: mollwollfumble
ID: 1064037
Subject: re: Blue light filter spectacles
So we’re back to rose coloured glasses.
Date: 11/05/2017 22:29:57
From: roughbarked
ID: 1064044
Subject: re: Blue light filter spectacles
or you could by the magnifying glasses at the stupormarkets. They don’t have any coatings.
Date: 13/05/2017 10:02:49
From: Tau.Neutrino
ID: 1064838
Subject: re: Blue light filter spectacles
My only complaint about color and light are web sites that have no night reading mode.
Date: 13/05/2017 10:03:46
From: furious
ID: 1064840
Subject: re: Blue light filter spectacles
- My only complaint about color and light are web sites that have no night reading mode.
That’s a client side issue…
Date: 13/05/2017 10:04:08
From: roughbarked
ID: 1064841
Subject: re: Blue light filter spectacles
Tau.Neutrino said:
My only complaint about color and light are web sites that have no night reading mode.
colour
Date: 13/05/2017 10:07:22
From: Bubblecar
ID: 1064842
Subject: re: Blue light filter spectacles
Date: 13/05/2017 10:59:18
From: Tau.Neutrino
ID: 1064869
Subject: re: Blue light filter spectacles
roughbarked said:
Tau.Neutrino said:
My only complaint about color and light are web sites that have no night reading mode.
colour
ok
Date: 13/05/2017 10:59:31
From: Tau.Neutrino
ID: 1064870
Subject: re: Blue light filter spectacles
furious said:
- My only complaint about color and light are web sites that have no night reading mode.
That’s a client side issue…
ok.
Date: 14/05/2017 02:19:34
From: Tau.Neutrino
ID: 1065235
Subject: re: Blue light filter spectacles
This trick is good for reading on a Galaxy S5, and other phones may support this feature
Negative colours Direct Access on Galaxy S5
On my S5 I can quickly access negative colours by triple-tapping my ‘home button’. You can setup this feature by turning-on “Direct Access, top right button” from your “Accessibility” menu and then checking the “Negative Colours” option.
Date: 14/05/2017 02:30:20
From: Tau.Neutrino
ID: 1065244
Subject: re: Blue light filter spectacles
I am using stylish for firefox and stylish for chrome
the global Dark style
https://userstyles.org/styles/31267/global-dark-style-changes-everything-to-dark
seems to work across a large number of websites
Date: 14/05/2017 02:35:42
From: Tau.Neutrino
ID: 1065245
Subject: re: Blue light filter spectacles
Date: 14/05/2017 02:38:52
From: Tamb
ID: 1065251
Subject: re: Blue light filter spectacles
Tau.Neutrino said:
Stylish for Chrome
Stylish for Firefox
No thanks. My eyes/brain know how & where everything is.
Date: 14/05/2017 02:42:15
From: Tau.Neutrino
ID: 1065256
Subject: re: Blue light filter spectacles
Tamb said:
Tau.Neutrino said:
Stylish for Chrome
Stylish for Firefox
No thanks. My eyes/brain know how & where everything is.
These addons and styles allow for easy reading white text on black backgrounds.
Date: 14/05/2017 02:43:35
From: Tamb
ID: 1065257
Subject: re: Blue light filter spectacles
Tau.Neutrino said:
Tamb said:
Tau.Neutrino said:
Stylish for Chrome
Stylish for Firefox
No thanks. My eyes/brain know how & where everything is.
These addons and styles allow for easy reading white text on black backgrounds.
White on black is pretty easy to read here.
Date: 14/05/2017 02:46:06
From: Tau.Neutrino
ID: 1065258
Subject: re: Blue light filter spectacles
Tamb said:
Tau.Neutrino said:
Tamb said:
No thanks. My eyes/brain know how & where everything is.
These addons and styles allow for easy reading white text on black backgrounds.
White on black is pretty easy to read here.
I wonder what color sunglasses they recommend for computer screens?
Date: 14/05/2017 07:52:14
From: buffy
ID: 1065357
Subject: re: Blue light filter spectacles
Why would you want to use sunglasses with a computer screen?
Date: 14/05/2017 08:24:45
From: SCIENCE
ID: 1065372
Subject: re: Blue light filter spectacles
perhaps they use polarisation filters for polarisation-dependent stereoscopic display
Date: 14/05/2017 10:11:44
From: Tau.Neutrino
ID: 1065426
Subject: re: Blue light filter spectacles
buffy said:
Why would you want to use sunglasses with a computer screen?
I dont need sunglasses now.
All my webpages now display with black backgrounds
,
Bom, abc news, youtube google news, google search etc
