The Eye Works Optometry

1328 Pearl Street Napa, CA 94559
(707) 254-2020 | Fax: (707) 254-2036
New Patients Call: (707) 693-4434
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Eye Safety:

All About Ultraviolet and Blue Light

Computer Eye Strain - What Can You Do?

#1. Get an eye exam!

Determine how often you use a computer. Measure how far your eyes are from your screen when you sit at your computer, and bring this measurement to your exam so your eye doctor can test your eyes at that specific working distance.

You have an eye exam every year, says The National Institute of Occupational Safety and Health (NIOSH).

#2. Consider computer eyewear

You can consider modifying your eyeglasses prescription to create customized computer glasses. This is especially true if you normally wear contact lenses, which may become dry and uncomfortable during sustained computer work.

Computer glasses also are a good choice if you wear bifocals or progressive lenses, because these lenses generally are not optimal for the distance to your computer screen.

Consider photochromic lenses or lightly tinted lenses for computer eyewear to reduce your exposure to potentially harmful blue light emitted by digital devices.

#3. Use good lighting and minimize glare

Use fewer light bulbs or fluorescent tubes, or use lower intensity bulbs. Position your monitor so windows are to the side, instead of in front or behind it.

Use floor lamps that provide indirect incandescent or halogen lighting instead.

If you wear glasses, purchase lenses with anti-reflective (AR) coating. AR coating reduces glare by minimizing the amount of light reflecting off the front and back surfaces of your eyeglass lenses.

#4. Upgrade your display

Replace your old tube-style monitor (CRT) with a flat-panel liquid crystal display (LCD), like those on laptop computers. LCD screens are easier on the eyes and usually have an anti-reflective surface.

Select a screen with the highest resolution possible. Choose a display with a dot pitch of .28 mm or smaller. Finally, choose a large display screen of at least 19 inches.for a desktop computer.

#5 Adjust your computer display settings

Blue light is short-wavelength visible light that is associated with more eye strain than longer wavelength hues. Reducing the color temperature of your display lowers the amount of blue light emitted by a color display for better long-term viewing comfort.

Adjust the brightness of the display so it's approximately the same as the brightness of your surrounding workstation. Check the white background of this page. If it looks like a light source, it's too bright. If it seems dull and gray, it may be too dark.

Text size and contrast: Adjust the text size and contrast for comfort, especially when reading or composing long documents. Black print on a white background is the best combination for comfort.

For computers running on a Microsoft Windows operating system, display settings can be adjusted in Control Panel. For an Apple computer, display settings are found in Systems Preferences (in the Applications folder in Finder).

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