Many of the ill-effects of computer use can be lessened or avoided altogether by utilising correct typing technique and posture, ensuring correct set up of equipment and good work habits.
Place computer monitor and keyboard directly in front of you so as to avoid twisting your neck.
Monitor should be 20-24 inches away from eyes and the height of the monitor should be 5-15 inches below horizontal line of sight.
The mouse and keyboard should be at the same height.
Use an adjustable chair that provides firm, comfortable support. Adjust chair height so that thighs are horizontal, and feet are flat on the floor (use a footrest if necessary).
Do not slouch. Chair should be with a backrest for lumbar support.
Ensure that frequently used materials are within easy reach.
Block excessive sunlight with drapes or blinds and use indirect room lighting.
Give your eyes a rest every 15 to 20 minutes by focusing on a distant object for 10 to 15 seconds and blink often to prevent dry eyes.
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