FIT5 How-tos for Kids :: How to correct your eyesight and do eye muscle exercises :: Golden Rules for Eyesight :: In front of the monitor

Place the monitor in a location where disturbing reflections are not seen. Also, make sure that the view of the monitor is directly in front of your eyes and the distance is approximately 20 - 28 inches (50 to 70 cm). For longer work or for playing games, the recommended screen size is between 15 and 17 inch with a font size of 12.