Potential hazards from incorrect viewing of monitors

HERE ARE A FEW POTENTIAL HAZARDS FROM HAVING YOUR MONITOR STAND AT AN INCORRECT POSITION AND THE SOLUTIONS TO ADDRESS THE PROBLEM:

Viewing distances that are too far can force you to lean forward and strain to see smaller text. This causes fatigue on the eyes and stresses the torso because the backrest is no longer providing adequate support.

Solution: Sit at a comfortable distance from the screen where you can easily read all text. The head and torso should be upright and the back supported by a chair. Generally, an adequate viewing distance is between 20 and 40 inches (50 and 100 cm) from the eye to the screen.

Viewing distances that are too near can force cause your eyes to work too hard to focus, which may cause you to sit or lean in awkward postures. For instance, you may compensate for the close proximity by tilting your head backward or pushing your chair away from the screen, which will cause you to use the keyboard with outstretched arms.

Solution: Ensure that there is adequate space between the user and the monitor. Bulky monitors from older computer models can be replaced by a flat-panel display, which requires less space and provides the option of bigger screen sizes depending on the model.

Working with your head turned to one side can overload neck muscles unevenly and increases strain and fatigue placed upon them, causing pain later on.

Solution: Position the monitor directly in front of the user. The head, neck and torso should face forward. The screen should not be farther than 30 degrees either to the left or right.

A monitor that is too high or too low will cause you to work with your head, neck, shoulders, and even your back in awkward positions causing increased strain and pain placed upon the shoulders and neck especially.

Solution: The top of the monitor must be level with the eyes or slightly below it. The centre of the monitor is normally placed within 15 to 20 degrees below horizontal eye level.

Bifocal monitor users typically view the screen with the bottom part of their lenses. This means that when they tilt their head backward, a monitor that is otherwise correctly placed is already inappropriate.

Solution: Lower the monitor to maintain the appropriate neck posture or adjust the chair height so the user can view the monitor without tilting his or her head back.

Looking at the monitor for sustained periods of time can dry your eyes out as you unconsciously blink less which causes more strain and dryness in the eyes. This can cause long term damage and eyesight problems.

Solution: Rest the eyes periodically by focusing on objects placed farther away. Stop, look away and blink at regular intervals so the eyes won’t dry up. If possible, alternate the user’s duties with non-computer tasks to rest the eyes.

The correct position of the monitor and workstation in relation to the user

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