Eye fatigue (also known as eyestrain) is a very common problem in control room environments. When watching screens continuously and intensely for a long time, the eyes tire, causing a string of problems including blurred or double vision, sore and watery eyes, headache, increased sensitivity to light, concentrating difficulties, etc. All conditions that are very unwanted when dealing with critical applications.
Although operators should take the measures dictated by common sense (take regular breaks, rest their eyes, etc.), there are also some technical aspects that can influence eye fatigue. The flickering of the screen, caused by the frequency of the backlight, is known to be heavy on the eyes. For Barco UniSee II, we let the backlights run at a very high speed. This highly reduces the perceived flickering, thus adding to the viewing ergonomic.