video display unit
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video display unitA computer display device that contains a cathode ray tube generating a visual display, which emits both extremely low-frequency (ELF, 45–60 Hz) and very low-frequency (VLF, 15 kHz) electromagnetic fields.
•Irradiation—Ultraviolet light, ELF and VLF radiation; potential associations (e.g., cataracts, reproductive disorders, facial dermatitis and epileptic reactions) have not reached statistical significance.
• Ergonomic effects—Visual; musculoskeletal (due to the position required for typing).
• Stress—The mental stress related to VDU use is thought by some workers to be more a function of the job done on the unit than the VDU itself.