Computer-supported workstations make special demands of the office lighting system with regard to both the distribution of luminance within the room and the need to limit direct glare and reflected glare. Notebook and other displays may even be used lying almost flat, which makes them susceptible to reflected glare from almost every direction. Picture tube technology has also made further progress in recent years, including antireflection coatings and the use of black lettering on a light background positive contrast , so that there are now far fewer problems with irritating reflections.
Where such modern equipment is in use, the standard explicitly permits higher luminance levelsthan the figures quoted, without specifying any maximum limits, however. Sorry we couldn't be helpful. Help us improve this article with your feedback. Related Articles. It is important to note that if you are using a VDU screen at work you are entitled to regular eye checks by your employer. Under the European Legislation, employees using VDU screens at work should receive an eye examination when they start and throughout the course of their employment at regular intervals.
If a person faces any eye related issues they are entitled to an eye examination funded by their employer. If the need arises for glasses then your employer is duty bound to pay for a basic pair which is for the purpose of use with a VDU screen only. However, you can make your own choice, but will have to pay for the difference in cost.
You can further improve your glasses by choosing multi-layer anti-reflection coatings. In bright lights, it allows your eyes and face to be seen better by others instead of the reflections of the lights and surrounding area.
Tel: Fax: Toggle navigation. VDU Examinations. The main risk to your eye comes from staring at a screen for too long therefore short rest breaks should be sufficient to rest the eyes eyes. As with many success stories, there have been some unexpected problems. Eye strain and vision problems are among the most frequent complaints while using a computer monitor. VDU work involves concentration on a task usually between 50 cm to 70 cm away.
To see clearly at these distances requires an unconscious effort. Several different muscles are needed when the eyes adjust to focus on a near point. Other muscles turn the eyes inward, directing them to the same point on the screen and moving the eyes quickly from one place to another. The use of well designed furniture and proper positioning of the hard copy can help prevent or reduce VDU operator discomfort induced by VDU use.
Use adjustable chairs that allow the user to set their chair for the most comfortable height and back support. Reference material should be placed at the same distance from the eyes as the VDU screen.
This avoids large head and eye movements which are tiring. Lighting needs vary with individuals, the nature of the task at hand and the layout of the office. It is usually desirable for the VDU screen brightness to be three to four times greater than ambient office lighting.
Whenever possible a lower level of general room lighting should be maintained where VDUs are used. It is not possible to specify the light level which should be used in an office due to the variety of activities which may be carried out at any one time. Special monitor shields or filters are available which can be fastened to the front of the screen to eliminate troublesome glare and reflection. Localised lighting sources such as flexible lamps may be used for other desk work.
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