*Put the screen(屏幕)45 to 80 cm from your eyes. *Try to reduce reflections(减少反光). *Take breaks(课间休息). a. Follow the 20/20/20 rule when taking a break:after 20 minutes of computer use,look at something 20 feet away for at least 20 seconds. b. Take more breaks after looking at the screen for a long time. You should take at least one15﹣minute break after 2 hours of computer use. *Do eye exercises. Step 1:Slowly move eyes up and then down. Do it for three times. Step 2:Slowly move eyes to the left and then to the right. Do it for three times. |