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Visual ergonomics refer to the study of vision in the work environment, in order to improve efficiency.
- tired eyes
- burning sensation
- headache
- irritation
- double vision
- blurred vision while looking at the screen
- blurred distance vision after using a screen
- viewing angle - eye depress while reading
- viewing distance - reading - 30-50cm
- position of screen
- distance from viewer
- screen below eye level
- spectacle or contact lenses prescription should be comfortable for viewing distance
- the background illumination should not be too high or too low
- proper workstation set up
- take breaks
- breaks do not necessary reduce productivity
- break should be taken before the onset of fatigue
- short, frequent breaks are generally more satisfactory than occasional longer breaks
- A break should provide an opportunity to do something completely different
- to ensure that the workplace can be set up to suit the user, the position of individual must be adjustable
- thighs approximately horizontal
- lower legs approximately vertical
- feet firmly planted on the floor or footrest
- forearms horizontal
- should be stable
- allow the user easy freedom of movement
- adjustable height
- seat back should be adjustable in height and tilt with good lumber support
- work desk should be large enough to allow a flexible arrangement of the screen,
keyboard, document etc.
- adequate clearance of thighs, knees, lower legs and feet
- matt finish surfaces with medium reflectance (grey/pastel)
- it is important that the hands are supported while keying - space that need to be supported lies between the keyboard & the front edge of the desk
- if possible, use a wrist support
- matt finish keyboard surface is ideal
- display screen to be positioned in front of user with top of screen at eye level or lower
- swivel and tilt the screen so that the screen surface is at the least reflective
brightness & contrast controls should be easily accessible
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