Hello guys  am back again with the negative impacts of blue light.

 Retinal damage. sunlight contains UV and blue light. Blue light, which is part of the visible light spectrum,it reaches deeper and deeper into the eye and its progressive  effect can cause damage to the retina.

Sleep deprivation.... research shows that the shorter wavelengths in blue light is what causes the body to produce less melatonin because it is sensitive to this type of light. ... Other wavelengths suppress delta brainwaves, which persuades sleep, and boost alpha wavelengths, which create alertness.

Blue light is also associated with:

  1. Increased risk of diabetes,fatness and heart disease.
  2.Higher prevalence of certain cancers.
  3.Increased possibility of depression.
  4. Disruption of circadian rhythm, which can result to insomnia and sleep disorders.

Blue light from phones, tablets could increase in high rate blindness and hurt vision, study finds. ... This leads to macular deterioration, an incurable eye disease that causes blindness starting in your 50s or 60s, researchers said.

References;

(1)http://www.optimumvisionaz.com...ffects-of-blue-light
(2) https://www.health.harvard.edu...ight-has-a-dark-side
(3)  https://www.theeyecenter.us/ey...ue-light-raleigh-nc/         Image result for NEGATIVE EFFECTS OF BLUE LIGHT           
In the next time round research I will be looking at positive impacts and also how blue light affects children's eye health.

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Hello Dorcas,
This seems to be a very interesting topic to look into, the effects of Blue light, as nowadays everyone is constantly looking at electronics. In most of my classes, this semester we have been using computers, for example in English all we do is write and read essays off our laptops, and even when not in school most of our life is around screens that emit Blue light, tv’s, computer’s, phones and more. I wonder though whether it matters more how close we are to the thing producing Blue light or whether things that produce Blue light matters more, in terms of how bad it is for us. I can’t wait to see what else you find on the subject.

Here are a few websites that may be of use to you in looking up the effects of Blue light on humans:
https://opto.ca/health-library...s-there-risk-of-harm
https://www.health.harvard.edu...ight-has-a-dark-side
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831986/

Hey Dorcas,

Great research round on blue light! I like how you looked into the negative aspect this round and next round you decided to research the positive. It's awesome to hear different perspectives. As Bogdan mentioned earlier, blue light affects us on a daily basis because our education requires the usage of technology for a majority of classes such as English, social studies and sciences. Perhaps you could look into ways to reduce our blue light exposure because I've heard it causes great harm to some people. On my laptop, I have a function called night shift which adjusts my screen appearance to become warmer or whiter based on the time of day. Does this have a positive impact on reducing blue light for myself? Anyways here are some links on the night shift feature and on positive impacts. 

https://www.independent.co.uk/...valley-a8139701.html

https://sleepbetter.org/does-a...t-shift-really-work/

https://www.allaboutvision.com/cvs/blue-light.htm

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