
photo credit: benleto
Cambridge Institute for Better Vision
THE WORLD’S LEADER IN NATURAL EYE CARE
Glare is any light or image reflected off the computer screen that reaches your eyes, cannot be ignored, and competes for visual attention.
Glare silently forces you – consciously or unconsciously – to twist and turn your head and body to avoid it. Glare also makes your eyes work harder to focus on the information on the screen (which leads to eyestrain, strains of the neck, back, shoulders and arms).
Sources of glare may be the lights in the room, the light fixtures themselves, unshaded windows, or even bright objects such as your own clothing.
Another form of glare is light that originates from the computer screen itself. This can occur when the brightness control is set or turned up too high and you are viewing dark letters against a bright background.
You can tell there’s reflected glare by turning on all the lights in the room before you turn on your computer. If you see any images or reflections on the (turned-off) screen, you’ll know that you’ve got a glare problem.
To reduce or minimize glare, you can experiment by:
- Tilting the screen
- Turning off or lowering offending lights
- Turning your computer so the screen is perpendicular to overhead fluorescents
- Covering fluorescent lights with egg-crate baffles
- Covering windows to block light
- Moving objects that reflect onto the screen
This may do it. However, since most offices weren’t built or designed for computer work, it may be impossible to eliminate glare altogether, so you might consider an anti-glare screen or filter.
Tinted glasses
Many offices are over-illuminated and often the overhead lights cannot be turned off. If you cannot control the ambient lighting, it’s worth discussing with an optometrist whether or not you should use tinted glasses.
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