The computer is a tool type one. Humans try invented. To save labor and reduce the inner working of presence. As well as other tools. Current computers have become a facility where people work, we avoid unavailable. Only light your eyes feel more comfortable and will screen next to the screen to minimize glare time. Or reduce electromagnetic exposure is minimal from the screen. These and screen It is sold in the market. To prevent eye fatigue, muscle pain or burning eyes, you should sit in a proper posture. And away from the computer screen and I do not have the dust screen should be clean.