Kindle paperwhite is a new electronic book reader, whose screen improves greatly. It has the patented built-in light, which makes people able to read in all kinds of lighting conditions with the even light illuminating the screen. And kindle paperwhite can deliver clear, crisp text and images under any circumstances. All of it sounds perfect, but you should not read on it for a long time.
Otherwise, you can strain your eyes. You should spend a limited time on it and rest your eyes after a certain time to avoid eye strain.
This symptom of eye strain has been caused by excessive use of eyes. The decrease of blink times will cause lack of tear hyposecretion that lead to dry eyes and visual fatigue. The kindle paperwhite has really almost the same as the computer screen, if you do not soften the screen light, and lower the intense of contrast, your eyes will be no chance to relax and easy to get eyes stain even eyes disease. Help yourself to have a distant view every two hours for 10min. If you use the kindle papaerwhite in a long time, you need to eat some supplement or fruits which full of Vitamin A & B, and carotene. They are the necessary nutrients which would protect your eyes everyday. Eyes is very important organ to your life, with 80%'s information is absorbed by your windows of your heart. Long time use of eyes will cause vision problems such as myopia, glaucoma, cataract etc. Please treasure your eyes because it is really precious!