E-readers and printed books: which is more eye-friendly?

With the increasing of digitalization, our interaction with print media becomes less and less More and more people are spending their time watching the screen in the process of innovation of smart phones, hand-held game systems, high-definition TVs and computer monitors How does this affect our eyesight? These screens cause the eyes to work in different ways than in print With the increasing diagnosis rate of computer vision syndrome (a disease caused by frequent staring at the computer screen without proper rest of the eyes), there will naturally be concerns about e-readers such as the Kindle Many people think that all digital screens will bring the same problem, but it is not Computer vision syndrome is caused by many factors To some extent, it's related to the way the computer displays the image The image and text on the display are drawn from small dots called pixels This will cause the eyes to focus on small points when looking at the image on the display, so not often resting the eyes will cause eye fatigue, headache and blurred vision Reading on iPads or other tablets is a real worry about computer vision syndrome, because they use pixels on the screen, but for most e-readers, it may not be Kindle and nook, two of the most popular readers, use different types of display called eink This kind of display is closer to the printed matter, and significantly reduces the related vision problems compared with other digital screens Other research shows that the new LCD screen with faster refresh speed and higher resolution also causes less vision problems than the old one It can be expected that with the continuous improvement of display technology, the problem of computer vision syndrome will eventually be completely solved In fact, there are some problems in traditional reading Reading is always necessary to stare at an object Experts say the eye muscles move about 10000 times an hour while reading So even if you are reading a printed book, there is a risk of eye fatigue If you want to prevent vision problems, try taking a break every 10 minutes Light sources are another potential problem Digital media can be backlit, allowing higher contrast even in the dark Printed books don't have this option, so take this into account in your reading plan To sum up, if there is eye fatigue in both digital media and traditional printed books, which is the better choice? Although the latter appears to cause fewer vision problems, experts say it depends largely on individual choice In other words, you should make a choice based on your environment For example, people with poor eyesight can read better on a backlit screen, while people with good eyesight can read traditional printed books better.