At present, "computer" has become a facility where people work as we do not use. Do not, therefore, should know how to use a computer properly. -Starting from a light can be adjusted to suit the eyes which resizes the only lighting, the eye and we feel will use the installation t-shirts screen travelers and reduce the harsh light, or electromagnetic exposure reduction with very little from the glass screen and liquor sales are based on the General market. -To prevent the eyes, chills and muscle pain or a burning sensation in the eyes, they should be seated in an appropriate posture and away from the computer screen for about 20-30-inch computer screen, below the eye level of approximately 20-26 degrees classified documents that require a view consists of a PC monitor near to the lower ranks of the blisters to ease and reduce the duration of the transition. In a very different phase. • Do not allow dust, the island should always clean computer screen and making eyes abound every 20 minutes to prevent eye fatigue, blink the eyes? If you feel a burning sensation in the eyes or apply artificial tears from time to time contractions. -Computer monitors need to focus clearly. A book of photos on the screen, adjust the polishing, Jane always those with the age of 40 years and remember reading glasses pet required reading glasses should be used appropriately and should not be used without glasses 2 glasses or floor layers due to thokhai page to read messages in a pan across the screen, which will cause the neck pain increases. The computer is a tool that people are trying to devise more used to help lessen and reduce steps in their work, as well as various tools, such as knives or axes to human invention to help lessen the cuts exclude objects from. Artificial humans, cars or hear can simply clear to travel. Moreover, there are also many other types of tools that man has tried to pressure plates are created are their brain, such as aid to help remember calculator, etc.
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