Give your eyes a break.

IF your job involves staring at a computer screen all day, then read on.

The screens -- also known as visual display units (VDUs), monitors and display screens -- are often blamed for a variety of health problems such as headaches or eyestrain. Indeed, staring at a screen for long periods can make your eyes tired and uncomfortable.

But there is no evidence to show that VDUs cause disease or permanent damage to the eyes. Generally, the problems arise from the way they are used rather than the VDUs themselves. So if you learn to use them safely, you can avoid developing problems.

Headaches can be caused by screen glare, poor image quality or reading the screen for long periods without a break.

Make sure your VDU is well positioned and properly adjusted so that the workplace lighting is suitable, without any bright reflections on the screen. This will be easiest if neither you nor the screen is directly facing windows or bright lights. Adjust curtains or blinds to prevent unwanted light. Ensure the screen surface is clean.

When setting up software, choose options giving text that is large enough to read easily on your screen, and select colours that are easy on the eye. Individual characters on the screen should be sharply focused and should not flicker or move. If they do, the VDU may need servicing or adjusting.

Take frequent breaks from looking at the VDU to give your eyes a rest.

You may need stronger spectacles due to the extra demand on your eyes from using VDUs. If you do encounter problems, arrange an eye test with your optician. Many companies will pay for employers to have an eye test and will pay money towards the cost of glasses if you need them for VDU use.