There is no denying that computer privacy screen could be bad for eyes after you stare at it for a long time. Because when you stare at a computer, your eyes moves between screen and keyboard, with the frequent change of the brightness and distance between your eyes and the screen, your eyes can feel fatigue and discomfort, gradually, your vision decreases. In addition, you blink your eyes less and the tear duct secretes less oil to moisture and to lubricate your eyes when staring at a computer screen, as a result, you are likely to develop dry eyes. In some serious cases, some even develop keratitis or conjunctivitis as a result of spending too much time on a computer privacy screen. I suggest you adjust the computer screen to 10-20 centimeters below your eyes. To avoid reflection and blurry, you should not use computer in a bright environment and beside the window. Blink your eyes frequently when you use computer and rest 15 minutes after exposing your eyes to the screen for one hour.