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| CompuTip The Computer Blues T168

Ami Raz    
Wednesday, 05 September 9:50 AM

Blue light - good or bad?

 

💡

 

Computer screens (as well as other digital screens) emit blue light.  Some studies have shown that too much blue light, especially at night, causes problems with sleep or with long-term eyesight.

 

I researched the problem and found articles that warn of a potential danger and others that "debunk" the blue light myth.

 

Blue light is a problem

 

Fox News:  Blue light from phone screens precipitate blindness, study finds, August 13, 2018

 

Blue light is not a problem

 


American Academy of Ophthalmology:  No, Blue Light From Your Smartphone Is Not Blinding You, August 20, 2018:

...When asked by The Verge whether his research showed that using electronic screens causes blindness, Ajith Karunarathne, PhD, lead author of the study, replied, "Absolutely not."

Recommendations of the American Academy of Ophthalmology:

There is evidence that blue light can interfere with humans’ circadian rhythms, making it harder to fall asleep. For some people, it can be a good idea to limit screen time before bed. Or to filter out blue light from screens before bedtime. [I posted a relevant tip on 30/4/18: "CompuTip - Night Lights J145" - AR]

 

Spending too much time looking at a screen can keep people from blinking as often as they should and from focusing on things at different locations. This can make the eyes feel dry, gritty, tired or strained. The simple solution is to look at least 20 feet away, for 20 seconds, every 20 minutes. Ophthalmologists call this the ‘20-20-20’ rule.


Best Wishes,
Ami Raz - Computer Solutions
Email me for my list of FREE Short Guides
Tel: (02) 648-2505 Cell: (054) 437-3936 Skype: amirazz
Email: amiraz@amiraz.com 
Teaching, Fixing, and Selling Computers Since 1985


        

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