Glare on the viewing screen may cause eyestrain, headaches and/or fatigue. Direct and reflected light may cause unnecessary glare on the screen. Bright light on the display screen "washes out" images making it difficult for operators to clearly see the work. Reflected light from polished surfaces may cause annoyance, discomfort, or loss in visual performance and visibility.

• For computer work, well-distributed diffuse light is best. The advantages of diffuse lighting are two-fold: There tend to be fewer hot spots, or glare surfaces, in the visual field, and the contrasts created by the shape of objects tend to be softer.
  o Use light, matte colors and finishes on walls and ceilings in order to better reflect indirect lighting and reduce dark shadows and contrast.

• Use light diffusers so that desk tasks (writing, reading papers) can be performed without direct brightness on the computer screen.
  o Place rows of lights parallel to the operator’s line of sight.
  o Use operator adjustable task/desk lighting.
  o If diffusers or alternative lights are not available, removing the middle bulbs of 4-bulb fluorescent light fixtures can also reduce the brightness of the light.

• Use blinds or drapes on windows to eliminate bright light. Blinds should be adjusted during the day to allow light into the room, but not directly into the operator's field of view.
• Lamps should have glare shields or shades and the line of sight from the eye to the light should be at an angle greater than 30 degrees.
• Reorient the workstation so that bright lights from open windows are not in the field of view.
• Use indirect or shielded lighting where possible and avoid intense or uneven lighting in the field of vision.
• Orient workstations so that light sources do not reflect on the screen. Position task lighting (e.g. desk lamp) such that the light does not reflect on the screen.
• Use blinds or drapes on windows to help reduce glare.
• Clean the monitor frequently. A layer of dust can contribute to glare.
• Screen glare filters that attach directly to the surface of the monitor can reduce glare.
• Use barriers or light diffusers on fixtures to reduce glare from overhead lighting
• Generally, a large number of low powered lamps rather than a small number of high powered lamps will result in less glare.
• To limit reflection from walls and work surfaces around the screen, these areas should be painted a medium color and have a non-reflective finish. Workstations and lighting should be arranged to avoid reflected glare on the display screen or surrounding surfaces.
• Tilt the monitor down slightly; this will prevent it from reflecting overhead light.
• Use dark characters on a light background; they are less affected by reflections than are light characters on a dark background.