The Health
and Safety (Display Screen Equipment) Regulations 1992 apply to employees who
habitually use display screen equipment as a significant part of their normal
work. A qualified assessor must assess these workstations and DSE. 
A number of
health problems are attributed to use of DSE. Where problems occur, they are
generally caused by the way in which DSEs are used rather than the DSE itself.
Some users may get aches and pains in their hands, wrists, arms, neck,
shoulders or back, especially after long periods of uninterrupted DSE work.
Usually these pains do not last but in a few cases they may become persistent
or disabling. RSI is a popular term for these aches, pains and disorders but a
better medical name for the whole group of disorders is “upper limb disorders”.
Problems of this kind may have a physical cause, but may also be more likely if
the DSE user feels stressed by the work.
Problems
can usually be avoided by good workplace design and by good working practices.
Prevention is easiest if action is taken early, before the problem has become
serious.
Tips for
setting up and using your computer workstation are as below.
Keyboard
 - Separate
     from screen
 
 - Adjustable
     tilt
 
 - Keep
     wrists straight, elbows at 90 degrees and arms parallel to the floor
 
 - Keep it
     directly in front of you and away from edge of desk
 
Screen
 - Position
     at a comfortable angle and distance (typically: eyes level with top of
     screen, screen tilted up slightly and at a distance of about 60cm from
     eyes)
 
 - Adjust
     brightness/contrast/distance/angle, if causing eye fatigue
 
 - Position
     at right angles to windows
 
 - Avoid
     glare from fluorescent lights (preferably between rows of lights)
 
 - Keep
     clean
 
Document
Holder (optional)
 - At same
     height, angle and distance from screen, as near to the screen as possible
 
Desk
·        
Large
enough to allow you to change position
·        
Wide
enough to allow you to sit at a sufficient distance from the screen and to move
the keyboard away from the edge of the desk
·        
Sufficient
legroom (no obstructions underneath)
·        
Uncluttered
(keep mouse and telephone close to hand)
Chair
 - Adjustable
     seat height and backrest height and tilt
 
 - Good
     lumbar support
 
 - Preferably
     without arm rests
 
 - Adjust to
     allow feet on floor (or footrest) with hips at right angles
 
 - Back
     straight and arms at right angle to the desk
 
WorkBreaks
 - Recommended
     5 minutes away from screen (and other “close” work) per 30 minutes, or 10
     minutes per hour (more frequent, shorter breaks are better)
 
 - Alter
     posture by exercising/getting up and moving around
 
 - Rest eyes
     by focusing on distant objects
 
Good
Environmental Practice
 - Turn off
     your computer (processor and monitor) when not in use (eg. at lunchtime
     and overnight)
 
 - If you
     wish to leave your processor on during lunchtime and short absences from
     the office, turn off your monitor (it consumes more than half the total
     power used by your computer)