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There is a variety of these available on the market, some of these are wireless and others are connected via a wire to the PC. As a general rule, your mouse needs to be sensitive enough for the user, be moved easily, in reach without pivoting your wrists and easily accessible and not restricted due to cables

Position the mouse to keep your wrists straight without overstretching the arm, try not to grip the mouse too hard avoid having this too far away and leaning on a hard edge. Try to use a padded mouse mat to prevent pressure sores.  Specialist mats can be purchased to support the wrist and prevent twisting. (Show example)

The Mouse and trackball are covered by section two of the HSE DSE Checklist (point to this page) let’s review the questions asked;

1. Is the device suitable for the tasks it is used for?
The mouse and trackballs are general-purpose devices that are suited to many tasks and they come in a wide variety of shapes and sizes.
Consider that some computers do not require a mouse or trackball as they are touch sensitive, this can be perfect in some situations but poor for others. Where using a touch-sensitive screen then preventative measures need to be taken to prevent injuries caused by stretching and twisting the body.

2. Is the device positioned close to the user?
Consider the placement of your device, this needs to be within easy reach and is best placed next to the keyboard on a side dictated by the user, for example, left-hand users will position the device on the left-hand side of the keyboard. At no time should you need to overstretch your arm to reach for the device, your arm should be relaxed and use a straight wrist. Where possible try not to leave your hand on this when it is not being used.

3. Is there support for the device user’s wrist and forearm?
A comfortable working position when using the device needs to be found by the user. Support can be gained from, for example, the desk surface or the arm of a chair.

4. Does the device work smoothly at a speed that suits the user
Ensure that the device is clean as this can cause problems with the speed and functionality of the device. The surface of the device needs to be suitable, try using a mat if the desk is not suitable.

5. Can the user easily adjust software settings for speed and accuracy of the pointer?
Test the device to see if this meets your individual needs, you are able to adjust the speed of your mouse, using your computer setting function. This will ensure that the sensitivity is suited to the individual user.