: Re: Kindle vs Kindle paperwhite, is the resolution really important for eyes? I'm trying to decide between buying a Kindle vs. a Kindle Paperwhite. The Kindle has a resolution of 167 ppi and the

@Christopher

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There are lots of filters that you can add for free that make this easier to answer. I use kindle fire and a bluelight filter. This has way more to do on your eyes than the res. Here is the skinny on all the research. I use Twilight on my Kindle and F.lux on my pc and my tablet. I hope this helps, also there is an eye health app on android that you can get

Description
Protect your eyesight with your iPhone/iPad!

This is a quit nice app which can reduce your visual fatigue and protect your eyesight! When you feel visual fatigue or strain your eyes for a long time, just open it!Portect your eyesight with rotational eyeball!

Why does it work:

Myopia results from asthenopia, staring for a long time.

This application helps in restoring vision and relaxing your eyes.

How to use it:
1 Open this application. Exercise and relax your eyes by following the rotational balls for 10 minutes every 1 or 2 hours.

2 Close your eyes and recall the movement, rotate your eyeballs.

3 We provide you with tips of how to protect your eyesight.

Notes:
1 Please don't move your head with the ball, rotate your eyeballs only!
2 This application is for recreation and relaxation only. It can not be used as medical device! Call your doctor if you have problem in your eyesight!

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