I am a student and i am thinking of buying a kindle bcz the books are expensive and i can get eBooks for free from my friends and kindle is a one time investment.plus it is easy to carry around and i can study where ever i wanna but the only problem is my eyes.my number is -5.25 of right and -5.75 of the left and i dont wanna put strain on my eyes so please tell me can i study for like 5 to 6 hours straight from a kindle without effecting my eyes or getting a headache?
См. статью: Kindle for long hour studying and effect on eyes?