The Desktop

• Monitor settings are very important as the screen refresh rate governs how often the screen is redrawn per second, if this rate is to low (72 hertz and above is recommended) it can lead to eye strain and headaches.

• This is because the screen flickers whilst redrawing; you may have noticed this on TV programs when the camera shows a computer screen visible lines can be seen moving on the screen because the camera captures the screen redrawing.

• Although the redraw is too quick to be seen by the naked eye if the refresh rate is too low the eye sees this redraw as a flickering and it this that can cause the aforementioned eye strain.