computer as an exposure

8/4/2019 Computer as an Exposure

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Computer as an Exposure.

Potential Health Risks for ComputerUsers.Methods of Risks Reduction.


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Introduction

Why many people stay in front of thecomputer for a long time?

Work

Games Internet surfing, chatting, emailing,

games


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Potential health risks

Vision disorders

Spinal and muscle pain

Hand problem

Thromboembolism

Mental symptoms and sleep disorders


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Vision disorders

Computer vision syndrome a temporary condition resulting from focusing

the eyes on a computer display forprotracted, uninterrupted periods of time

headaches,blurred vision, neck pain, fatigue, eye strain,dry and irritated eyes, double vision,polyopia, and difficulty refocusing the eyes

Glaucoma is characterized by increasing loss of

peripheral vision eventually leading to severevision loss

more frequent in short-sighted computer


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Spinal and muscle pain

Results from poor sitting posture for along period of time

More frequent on neck, shoulder and

lumbar area Spondilitis may occur in severe cases


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Hand problem Carpal TunnelSyndrome Associated by symptoms and signs,

which are caused by compression ofthe median nerve travelling through

the carpal tunnel Signs: pain, numbness and tingling

sensations in the arm, which may

extend to the shoulder and neck area Results from wrong position of hand

during typing or holding the mouse


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Thromboembolism

Blood clot may form if a person sit in 1position without moving for more than6 hours

Can lead to pulmonary embolism if theclot breaks off and travel to the lung

Obesity, smoking, taking birth control

pills or hormone replacement therapycan all increase the risk of thrombosis


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Mental symptoms and sleepdisorders Caused by video display terminal

(VDT), which is a computer terminalconsisting of a screen on which data

or graphics can be displayed. Most common among workers who

spent more than 5 hours a day gluedto their computer screen

Mental symptoms: lethargy, anxietyand "reluctance to go to work

Sleep disorders: insomnia and fatigue


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Bad postures


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Other computer hazards

Gas from computers Mostly from plastic components and is

obvious in new computer

Laser printers Emit toner dust which contain carbon and

solvent

Monitors Radiation emitted by back of computer

Flicker on monitor screen Chemicals from computers

Lead, Cadmium, Mercury


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Methods of risks reduction

Prevent computer eye strain

Correct posture and position

Use ergonomic products

Frequent breaks and stretching


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Prevent computer eye strain

1) Get a comprehensive eye exam2) Use proper lighting3) Minimize glare4) Upgrade your display5) Adjust brightness and contrast of

computer screen6) Blink more often

7) Exercise your eyes (20-20-20 rule, 10-10 rule)8) Take frequent breaks9) Modify work station


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Correct sitting posture


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Correct position of hands


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Ergonomic products


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Frequent breaks andstretching Breaks should be done at least 5

minutes every hour

During computer breaks, it is

advisable to move around, stretchyour body and drink more water

Helps to relax eyes, reduce tension

and muscle fatigue, and prevent bloodclot


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Head and neck exercises


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Hand exercises


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Stretching


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computer as an exposure

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