Do you regularly feel exhausted but can’t sleep? Tired eyes? Maybe you’ve noticed increased glare and light sensitivity? You probably have a screen based job. Moreover, after work you feel so tired you can’t but relax: read, watch TV, play video games, shop online, etc. But in doing so you rest your rested body (at work you mostly sit) and exhaust even more your already tired eyes (they’d been working very hard all day)!? Wouldn’t it be nice to be more productive at work and simultaneously more rested and upbeat during and afterward your workday? It can be done! Fight the effects of sedentary lifestyle and sedentary work with computer work in motion.
This post suggests that eye fatigue and photophobia should be added to the list of health risks associated with sedentary lifestyle – the sum of overall sitting time (screen based work, TV viewing, sitting in cars, …).
More importantly, the post proposes several ways you can set up your computer workstation to be physically active while you work. Continue reading →
Saying that “blue light blockers don’t distort color” is manipulation used to convince uninformed people to buy products that filter blue light, but not much and not any more than it filters the rest of visible light spectrum. But to prevent or mitigate eye strain, glare, insomnia, etc. a filter should block either most blue light or considerably more blue light than it blocks other, longer wavelengths of visible light. Such a blue light filter necessarily distorts color!
With the help of a few spectrograms you’ll see below why it is possible to say deceivingly – but without lying – that blue blockers don’t distort color.
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Office lighting and screen glare frequently cause computer eye strain headache, computer use in offices with LED and fluorescent lighting in particular. The light sensitive and those with fluorescent light sensitivity are particularly vulnerable as their problems appear to have the same cause: disproportionately high blue light content emitted by LED and fluorescent lights. This post draws from vision and work ergonomics science to suggest ways to reduce LED and fluorescent light headaches with five different types of blue filtering glare screens.
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Blue light filter selection is complicated. A blue filter may help you with many problems: computer eye strain (computer vision syndrome), LED & fluorescent light sensitivity, sleep disorder, age-related macular degeneration (AMD), light sensitivity (discomfort glare), visual acuity… But not every blue filter will produce optimal results given the specifics of your blue light sensitivity problem. The chaos of hype marketing terminology often hides more than it reveals which further complicates the selection process. Read on to find out: which wavelengths your blue filter should absorb/block, by how much, how to compare bluelight filters… Continue reading →
Eyes sensitive to light!? Evidently I am talking about light sensitive eyes as in photophobia, light aversion, discomfort glare, pain, eye fatigue and computer eye strain induced by light and glare. Increasingly scientific evidence shows that eye sensitivity to light tends to be caused only by a small portion of visible light that carries most of its energy – blue light, i.e. High Energy Visible (HEV) light. This article:
- highlights key scientific reports indicating that eye sensitivity to light tends to be caused by blue light
- suggests a way to test if and to what extent your eye sensitivity to light is blue light induced
- proposes solutions to help you improve your light sensitivity pain threshold and/or cope with your blue light sensitive eyes
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