•Text should be easy to read. To help ease eyestrain, adjust text attributes such as character size, spacing, and color. In addition, you will need to use the controls provided with your monitor to adjust the visual settings so that contrast and brightness levels are comfortable for you. High contrast and low brightness is usually the preferable combination.
Note: The ISO 9241 and ANSI/HFS
give technical recommendations on how to achieve good readability.
•The monitor should be free from flicker. If the image on your screen is not stable, the monitor may require repair or adjustment.
•When possible, use a program that has a simple user interface, such as easily identifiable icons and
Monitor use specifications
•When viewing your monitor, your head should not be tilted more than 15 degrees forward.
•Optimum readability for monitor use is generally considered to be 21 minutes of arc. This corresponds to a character size of 3.7 mm
(0.15 inches) at a viewing distance of 60 cm
(24 inches).
•You should not have to look up more than
5 degrees above horizontal or down more than
30 degrees below horizontal for normal work tasks, such as typing or reading.
Chapter 1 • Preparing to Use Your Computer | 15 |