Hello guys,In this time round research,I will be looking at the preventive measures of the blue light.

Screen time


  1. Limit screen time when you are not working. It is impossible to avoid digital devices in the workplace, but you can minimize the amount of time you spend on electronics when you are not working. Digital devices frequently provide a passive “escape” from reality that seems enjoyable, but it can be a poor use of your time and can just increase eye fatigue and muscle strain.
  2. If you can use devices at night, download a blue light filter app. There are several free apps in your App Store that will put a filter on the screen of your smartphone or tablet to minimize glare at night. This will help reduce eye exhaust.
  3. Don't not to use your devices directly before bedtime. Overexposure to blue light can result to restlessness and insomnia. Set a restrict of turning off your devices at least one hour before bedtime and charge your devices in a different room so you are not tempted to turn them back on.
  4. Blink, blink, blink. One reason that we are more capable to dry eye when using electronics is that our blink rate is reduced significantly. 
  5. Get regular comprehensive eye exams. There is no replacement for an eye exam by a licensed specialist. Schedule constant eye exams to ensure your vision stays clear and healthy. You can also talk to your ophthalmologist about authorized protective lenses with blue light filters to reduce eye strain

6. Wear proper eyewear

Work with your doctor to determine whether  you need special eyewear to reduce eyestrain. You may even need specialized lenses, devices, or eye therapy for the activity that result to eye strain. Certain coatings and cast for lenses may help your eyes Or you may find that you need to cut the time you wear contact lenses to help rest your eyes.



Original Post

Hey Dorcas,

I like the research you did this week! I especially appreciated how much detail you went into about the preventative measures you can take to avoid harmful blue light. I found the amount of time an average adult in 2017 spends looking at a screen in a day staggering--over eight hours? 

Perhaps you could look more into the ways we interact with blue light (even unknowingly?), and if there are devices or ways we could manufacture future devices to avoid this harmful blue light. Additionally, you could pursue looking into why blue light is so damaging, and its origins.

Here are a couple sites you could use:

Good luck with your research, I look forward to seeing what you find!

Hi Dorcas,

Wow! Good job. I really enjoyed reading your research. It's very detailed! In Canada, I find that a lot of people are exposed to blue light. We use technology on a day to day basis to do our work. For example, I have a couple of classes where it's "strongly suggested" to have a laptop. In English, the teacher wants us to have our devices open onto his webpage at the beginning of the class to view our instructions of the day. As a result, you can see that it plays a strong role in our lives. 

I agree with you: blue light is harmful. I enjoyed how you mentioned the preventive measures we can take to avoid straining our eyes. One concept that I didn't know about is that there were blue filter apps on our iPhone. It's really intriguing to know that there are several free apps in the App Store that can reduce and minimize glare night. I know that, recently, Apple got a feature onto their newest update where it automatically "changes" the blue light your phone to orange light once it becomes sunset. I think it's an amazing idea that they are taking part in helping us prevent straining our eyes. If you are interested, you may want to look into the psychological and long-term effects of blue light! I believe that this would be very beneficial!


Websites you can use:





Good luck!




Hi Dorcas! 

I enjoyed the list of options you shared in order to prevent the effect of the harmful blue light on a user's eyes! Looking at the photo you added, it's unbelievable to acknowledge! The total time spent on a device seems to be just increasing every year, which is not the best case scenario. 

I agree with your point of blue light being harmful to others; it's something we should think more maturely. It's affecting our eyes and we aren't doing much about it! I suggest in your next round you could discuss in depth about sleep disorders such as insomnia, that can derive from blue light. Why does it cause these sleep disorders, or maybe the science behind it?

Here's a source that could possibly help you: 


Good luck Dorcas!

Hello Dorcas! I love what you do and am always following your work.Am worried about the time spent on smartphone and gadgets with years.Its here we are 2019 we all depend on technology,to communicate,to bank,for information,entertainment and we cannot avoid usings computers ie smartphones,tablets,laptops etc what we do and what you are doing is that new ideas and developments are created to cope with these difficulties in using gadgets.About the blue lights,its great now that Ive known about their dangers and ways to prevent and minimize them in our gadgets. Good luck and do great.See you soon in you next research.

Hey Dorcas!

First of all, I love the way this round is formatted and the flow it has. I also love the detail used when describing the strategies. The increase in time spent looking at a screen from 2015 to 2017 was shocking to me, I didn't think that it could grow so much in just two years. This makes me wonder if there are any visible, physical differences between children who have been raised with a limit of time spent on screens, as opposed to children who do not have any restrictions.

Good Luck Dorcas!

Add Reply