Wednesday, November 17, 2010

Computer's Negative Effects

Computer as a tool that many people use it turns out to cause disease. The disease is caused by the use of computers among others stress, disorders of the eye and musculoskeletal disorders. Disturbances above arise because of misuse, such as the location of the screen is too high, the distance the eye with a computer that is too close, not ergonomic keyboard table with the body of the operator, the lighting is wrong, and so forth. Disturbances that arise can be overcome by improving the error above. With the correct technique of using the occupational disease caused by a computer can be avoided.RSI form of pain caused by repetitive movements in one particular body part and the seating position too long or settled. Our position in the work, desk work, and work equipment will determine the occurrence of RSI problems. Disturbance is usually a neck, wrist, and back that becomes rigid.

While CVS is in the form of eye fatigue caused by too old to work at the computer. So the eyes feel dry, watery, feels hot or dizzy. For that, the laying of the monitor screen should be under the eye with his elbow in a position of 90 degrees. Get used to rest at least 15 minutes every hour and divert your eye on another view, if you can focus your sight on a distant object. Sit up straight and do not lean sideways on the chair because sitting the wrong position can cause pain in the muscles. Use appropriate computer equipment, such as a monitor, keyboard, mouse in accordance with the palm of the hand for not stiff wrist.

RSI disorders can be overcome by doing a massage on the muscles and nerves under stress. In addition, should do stretching regularly to parts of the body is often attacked for stiff muscles experiencing relaxation. Then, for the eyes do not tire easily and dry quickly, blink as often as possible. With a blink, the eyes become wet, so avoid the eye strain and headache caused securities.


A. Stress 

Working with computers can cause stress. Stress can result from using the computer does not have differences with the type of stress that is in life. As was found in the National Institute of Occupational Safety and Health (NIOSH), found that computer operators experience higher job stress than other workers. 

B. Psychiatric disorders 

Besides working with computers all day can lead to anti-social and a lack of motion, and reliance on computer

C. Impaired vision 

The use of computers in the long term can cause sharpness, 'headaches and disorders of the eye itself. This situation is by The American Optometric Association called Computer Vision Syndrome (CVS). It is not possible if the later will become permanent and will damage the eye. However, this situation will soon be reduced if the computer use is stopped. So please be aware of symptoms - symptoms that occur during use computers.

Symptoms of CVS include:
1. Temporary myopia,Namely the inability to see distant objects clearly for some time until several hours after using the computer.
2. Eye fatigueCircumstances tired eyes can be caused by the danger of the monitor, which is reduced vision correction, read documents with small font sizes, an unbalanced state of the contrast between text and background, flicker on the monitor real and dry eye.
3. Blurred visionBlurred vision can be caused by changes fisilogis (due to aging or disease processes). This can also be caused by seeing objects continuously with 12 inch distance and reading with bright light.
4. Dry eyes, irritation and watery eyes.This situation occurs if the lack of fluids to keep the eye moist conditions maintained eye blink reflex. The amount varies according to eye blink activity is being conducted and will be reduced when it is concentrated. The eyes become red and watery, because when using the computer will reduce the amount of flicker.
5. Increased sensitivity to light. 

6. Headaches, back pain, neck pain and muscle spasm.

Things that can cause the emergence of CVS are: 

1. Poor body position when dealing with computers. 
2. Lighting that produces glare or shadow, blurred images orimages that are too dark or too bright.
3. The number of blinking is not enough to wet the surface of the eyeball. 
4. Use of corrective lenses that are not in accordance with the user's position and distancefrom the monitor 
5. Minor abnormalities on the vision that was exacerbated by the use of computers.(More details about the eye disorders can be found here)

Warning Signs: 

The early symptoms of RSI can appear in various places from the base of the arm to the tip of the hand. Symptoms are a warning sign of concern:
 • Difficulty opening and closing hand 
 • Muscle cramp hand (for example up to difficulties buttoning clothes)
 • Difficulty using hands (to turn the pages of books, plays keys or even hold a mug) 
 • Wake up with pain on the wrist or numbness in the hand, especially in the early morning 
 • Hands feel cold 
 • Hand shaking (tremors) 
 • The hand feels awkward, vibrate, or even numb.
When you feel symptoms like this a few days come and go, you should be suspicious. This possibility is a warning sign you suffer from RSI.


• Make sure your workplace is ergonomically designed 
• Reduce the use of computers (including to play games and re-open a reference book rather than searching the web)
 • Use a variety of input devices. 
• For example, replacing a more ergonomic mouse or move into the hands of another, even less use of mouse 
• Take some time off for a moment. 
• Rise from your chair, because our bodies are not designed to sit all day. Do not type more than 30 minutes without a break 
• Often times stretching.
• Stretching helps reduce tension in the muscles. But do not stretch if you feel sick. 
• Reduce the speed to double click. 
• Keep the temperature warm. 
• Muscles and tendons are located in more wintry conditions at risk of RSI.

Stretching Exercises:

• unpacked the fingers and hold for 10 seconds until you feel the stretch. Then bend the finger to the knuckle, but not a fist and release
• Expand the elbow to the head, lower arms dangle at the back of your head. Reach elbow with the other hand, pull down to the nape. Repeat with other side 
• Grasp the hands behind the head. Sit up straight, stretch your elbows back and hold to stretch
• Sit upright in a chair, hold your hands behind the back of the chair and stretch your arms as much as possible and then raise their hands toward the ceiling 
• Bow your head toward the ear and then gently pull the head to the shoulders and hold for a while. Repeat for other side. 
• Move your shoulders forward, back, down and up. Make a circle as possible and repeat with different directions


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