Lighting measurement is not always a straightforward process either. Unless the VDT can be given its own room, it will likely be subject to excessive ambient light levels and glare. Windows are especially troublesome. Occasionally, a hood will be needed on a VDT to reduce stray light and glare on the screen. Be aware, however, that many people feel uncomfortable at first in environments with this lower level of illumination.
Task lighting is often the best solution.
This usually offers considerable energy savings as well. New, modular office workstation systems carry this concept to an advanced degree. Fluorescent Lighting Usually, general-purpose fluorescent lighting is not the best choice for computer environments. It is usually installed with excessive illumination levels, and its light is well diffused, which promotes screen glare. This does not mean that all fluorescent lighting is unsuitable.