Technological advances have made an impact in
almost every aspect of our lives (office work,
accounting, designing, medical facilities, database
management, experimental work and daily tasks)
after the availability of computers. A personal
computer is a common item now-a-days in offices,
colleges, universities and home. Its use has
increased efficiency in easy access to information,
writing articles, and communicating to others.
Millions of people including children, college students
are using computers for prolonged hours. A video
display terminal (VDT) is also known as computer
screen. The symptoms reported were eyestrain,
tired eyes, headache, blurred vision, irritation,
burning sensation, redness, double vision, neck pain,
and backache which might be caused by
combination of individual visual problems, poor