As I understand it, and I think this study concurs, permanent eye damage isn't caused by computer use. Rather it's a combination of genetic susceptibility to b

As I understand it, and I think this study concurs, permanent eye damage isn't caused by computer use. Rather it's a combination of genetic susceptibility to being near/far sighted and straining your eyes during the susceptibility "period". That is if you aren't genetically inclined to eye problems, no reading or computer use is going to make your require glasses. If you are genetically inclined and do near work (reading books, computers,phones etc...) then your number will rise during childhood and early adulthood. The number usually stabilizes between 20 and 30 years. If you are genetically inclined but don't do near work, you will not need glasses. Staring at a computer for long hours without blinking will give you headaches though, and maybe blurry vision, but that'll pass in a day or two.