Computer Related Health Hazards

unclesamnorweiganΤεχνίτη Νοημοσύνη και Ρομποτική

18 Οκτ 2013 (πριν από 3 χρόνια και 2 μήνες)

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Computer Related Health Hazards

Research Topics


Repetitive Strain Injuries


Carpal Tunnel Syndrome


Eye Strains and Computer Vision Syndrome


Internet Addiction


Stress and Depression


Radiation

Carpal Tunnel Syndrome


Carpal Tunnel Syndrome (CTS) is a Repetitive Stress
Injury (RSI) caused when the median nerve is pushed by
the flexor tendons inside the tunnel made up of the wrist
bones, or carpals.

How is CTS caused


The forearm flexor tendons and a few nerves pass through
a small tunnel formed by the wrist bones, or carpals, into
the hand. As you move you hands and fingers, the flexor
tendons rub against the sides of the tunnel, sometimes
causing them to swell and push the median nerve. When
the median nerve is pushed by the tendons, we feel pain.


Symptoms of CTS injury


Pain that may run up the hand into the wrist and arm


Numbness and coldness in the hands


Loss of strength and/or joint movement


Discomfort and stiffness in the hands


The need to massage your hands, wrists and arms


Swelling and coldness in the hand

Reasons for CTS injury


Stress will increase muscle tension causing pain


Long hours in the keyboard, especially those that type
more than four hours


Lack of circulation in the muscles that prevents nutrients
and oxygen to reach the tissues


Inadequate rest and breaks


Genetic predisposition due to the amount of lubrication of
the flexor tendons that one receives and the tunnel's
geometry


Other health problems like diabetes and rheumatoid
arthritis


Poor posture including the sitting, placement of hands on
the keyboard and proper height of the keyboard


Poor diet (lack of vitamins)

CTS Treatment


Rest, rest and more rest


Use of a wrist brace or splint


Take medication like ibuprofen


Cut back on sugar, caffeine, alcohol and take vitamins


Keep hands warm, take breaks, exercise your hands and
arms


Correct your typing and use your knowledge of
ergonomics


Surgery should be your last retreat if everything else fails

Eye Strains


Eye strain is the single largest complaint of VDT users
causing soreness, irritation, blurred vision, redness,
dryness and tenderness of the eyes.

Symptoms of Eye Strains


Impaired vision, double vision and blurred vision


Difficulty looking at one point for a period of time


Itchy dry eyes and discomfort while looking at the VDT


Headaches


Eye fatigue that can have serious impact later in life

Reasons for this injury


Bad monitor resolution, flickering, or glare at the monitor


Poor lighting conditions in the computer room


Electromagnetic radiation emitted by the VDT (UVA)


Staring at anything for a long period of time will cause
blurred vision


Loss of negative ions in the atmosphere due to electrostatic
charges on the face of the CRT

Eye Strain Treatment


Use your knowledge of ergonomics


Take breaks when you feel strained


Use your laptop when possible because the monitor emits
less radiation


Adjust the brightness of your screen


Wear protective eye glasses

Internet Addiction


Use Internet every day without days off


Loosing track of time while surfing the Net


Staying home more loosing social contacts


Denial of high usage


51% of Internet addicts suffer severe job impairment


58% get addicted within the first 12 months of Internet
usage

Stress and Depression


Computer operators experience more stress than any other
occupational group the National Institute of Occupational
Safety and Health has studied

Other Computer Related Health Hazards


Back problems (pain) caused from the efforts of the
muscle to hold your posture for long periods of time


Skin rashes that are caused from the static fields in front of
the screen causing ions and pollutants in the air to become
positively charged and attach themselves to your
negatively charged skin (especially in low humidity)


Abnormal reproductive outcomes (?) due to
electromagnetic radiation's affects on biological functions
and biochemical processes inside our cells


Cancer and leukemia (?)


Skin aging (?)

Ergonomics


Ergonomics, the "science of work," is a field of technology
that considers human capabilities and limitations in the
design of machines and objects that people use, the work
processes that they must follow, and the environments in
which they operate."

A few ergonomic advice


Use a chair that has full support of your back, is adjustable, and has a
footrest and armrest


Place your feet firmly on the floor


Use an ergonomic keyboard that is angled or can split to enjoy a more
natural typing position


Use a wrist rest that is comfortable


Place your hands straight when typing, the angle of your forearm and
upper arm should be 90 degrees


Sit 24 to 28 inches away from your monitor


Place the monitor 15
-
30 degrees below your straight
-
ahead line of sight


Keep your body away from the sides and backs of monitors to reduce
the exposure of radiation


Avoid glare on your monitor (do not have strong sources of light in
your back) and use screens that minimize glare


Use the proper light in your work environment that is compatible with
the monitor frequency