Your monitor flicker or the refresh rate of your PC can contribute to problems such as eyestrain or headaches with the user.

Basically, humans can see light flickering up to 25 hertz. Anything above that level humans can not see but it can affect people, that is why you can get major eyestrain looking at a flickering light (above 100 hertz).

You should control your flickering in your PC to reduce any chance of the mentioned problems. You should control the flickering on your computers screen by reducing the refresh rate to at least 75 hertz.

To do this in Vista just follow this;

  • Open control panel
  • Click appearance and personalization
  • Click personalization
  • Click display settings
  • Click advanced settings
  • Click the monitor tab
  • Select a new refresh rate
  • Click apply and OK

How to Correct Your Monitor Flicker