With times past by development, an increasing number of people of all ages are using their free time for digital entertainment. Such as computer, television, smartphone and so on, with these new tech comes new hazards and damage to our eyesight. Most computer games or information on the smartphone or tv play series require lengthy involvement to finish,forcing people to stay focused on the screen during their freetime. This can lead to many eye problem,including headaches,blurred vision,and nearsightedness if frequent breaks are not taken to relax your eyes. So in order to protect our vision, you had better make certain to position yourself properly when you must set in front of the computer. And take frequent breaks and reduce glare( maybe a pair of computer glasses may help your eyesight.) in addition you can eat more vitamin A, Lutein,and selenium, they also can do a good job on your eyesight.