Conditions Caused by the Improper Use of Computers

Computers are commonplace in modern society. Many computer systems have poor ergonomics, meaning they were not originally designed to meet needs for good posture. Hence people have developed a range of conditions that often lead to long-term disability. When using computers, simple measures such as chairs with adequate back support or ergonomic keyboards help to alleviate or prevent some of the conditions caused by improper computer use.

Ergonomics

• The study of ergonomics includes the provision of suitable work conditions that meet workforce requirements for health and safety. This promotes increased productivity and a reduction in work-related injuries. In computer-based work environments, conditions such as Computer Vision Syndrome (CVS) and Repetitive Strain Injury (RSI) result after prolonged computer use. Specialized desks and chairs to ensure correct posture and a safe distance from the computer screen, and adjustable keyboards to minimize wrist strain are some examples of the application of ergonomics for computer users.

Computer Vision Syndrome

• This is the most common condition in computer users. It is usually caused by long, uninterrupted periods of focusing on the computer screen. Symptoms include eye fatigue, painful and/or teary eyes and headaches. Regular blinking and eye rest, corrective lenses and a diet rich in eye nutrients such as beta carotene are recommended to alleviate symptoms.

Repetitive Strain Injury (RSI)

• RSI describes a group of syndromes that affect tendons, nerves and muscles and lead to pain in the arm, neck and shoulders. They are caused by poor posture that results from muscles remaining tensed for long periods. Syndromes categorized under RSI include Tendonitis, Stenosing Tenosynovitis, Tenosynovitis, DeQuervain's Syndrome, Trigger Finger/Thumb, Reflex Sympathetic Dystrophy Syndrome, Intersection Syndrome, Thoracic Outlet Syndrome and Carpal Tunnel Syndrome. These are all interrelated, and a person may suffer from multiple conditions at the same time.

Carpal Tunnel Syndrome

• Carpal Tunnel Syndrome is the most common condition classed under RSI. It is associated with pain, numbness or tingling in the wrists and hands, with symptoms worsening at night. Ordinary keyboards require hands to be close together when typing, and irregular hand and wrist positioning. Recommended treatment or prevention measures involve frequent breaks during computer use, stretching techniques, or using an ergonomic keyboard. Extreme cases cause restriction in simple hand and wrist movements and may require surgery.