>> Scientific Knowledge: Prevent “Computer Vision Syndrome”
With computer popularized, computer operating is an indispensable part in
modern life almost. Many people must watch fluorescent screen of computer
all day long for work need. Operating like this for a long time will cause visual
fatigue easily and even induce some diseases, such as glaucoma. Therefore,
those operating computer often should pay attention to eye care. Items below
should be highlighted generally:
①
Avoid operating computer for a long time and pay attention to rest
Have a 5-10 min rest after operating computer for 1 h. Computer user can
focus on a distant object or do eye exercises.
②
Keep excellent work posture
Keep the most appropriate work posture to make eyes look at fluorescent
screen horizontally or look downwards the screen slightly. The optimal
position is center of fluorescent screen is the part 20° below horizontal sight
line. That position can relax neck muscles and minimize the area that eyes
being expose to air.
③
Keep appropriate work distance
Eyes should be 60 cm at least far way from fluorescent screen of computer.
④
Create and keep excellent work condition
S
urrounding light should be gentle; fluorescent screen of computer should
have appropriate lightness and excellent clearness. Do not operate in dark
environment, because black and white contrast can damage eyes. Heights of
desk and chair should be matched with that of computer.
⑤
Go to hospital to see ophthalmologist if eye care message and rest does
not work in case of dry or red eyes, burning or foreign body sensation, heavy
eyelids, blurred vision and even eyeballs swelling pain or headache.
