Quiz For Computer Vision Syndrome—The Work Environment

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Glare discomfort can be solved by:

1. turning off some of the offending overhead lights
2. retrofitting fluorescent light fixtures with parabolic louvers
3. re-orienting the workstation
4. wearing a visor

The problem caused by computer screen reflections is:

What is a quick work-site test to determine if screen reflections are a problem for a particular computer workstation.

Why are computer users at higher risk for glare discomfort than many other workers?

The primary source of reflected light from a computer screen is:

What are the maximum luminance ratios recommended by the Illuminating Engineering Society between the task and its adjacend visual surfaces (within 25 degrees)?

Which of the following most effectively reduces reflections in computer screens?

How can a consumer be assured of obtaining a high quality anti-reflection filter?

Which of the following color combinations (letter color on a background color) is visually the best for a computer display?

What is the best level to adjust the screen brightness?

Which of the following refresh rates would be most comfortable to view

Which flicker rates are most likely able to induce epileptic seizure?

Which of the following dot pitch values would be the best?

How much larger should letters be relative to a person’s visual acuity threshold in order to have optimal performance and comfort?

What is the best vertical location of the computer screen?

What is the best place to locate reference material?

What is the best way to reduce stress on the wrists while typing?

The keyboard and mouse should be located:

Why are computer users at risk for glare discomfort?

1. They are looking horizontally in the room
2. Glare sources are closer to the fixation point compared to those who look down at the desk
3. Light leaves overhead fixtures in a wide angle resulting in light directly entering the eyes of workers.
4. Bright open windows pose the same risk as overhead fixtures

The diffuse reflections off a computer screen

1. cause the screen to appear brighter
2. reduce contrast of the text presented on the screen
3. aggravate accommodative disorders, binocular dysfunction, and refractive disorders.
4. cause black characters to appear grey

The most common and usually the most effective way of minimizing reflections off computer screen is through the use of:

The most comfortable polarity is:

The flicker fusion frequency (CFF) for most common viewing conditions is in the range of:

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