In Japan, there have been studies found that people who use the computer for a long time, but the day in several consecutive hours. There is the risk of the occurrence of a computer video-mission nadom also have a relationship with the occurrence of glaucoma in their population increase. If diagnosed and treated too slow will cause permanent vision loss. In United States and Canada, there have been announcements warning parents. In young children, birth through 2 years of not using because it will affect the growth of the brain. Make learning more slowly and in children aged less than 12 years of age should avoid using, because a short meditation. The movement is less children will be sitting ning until becoming obesity and other diseases, according to. It should not be staring at the Smartphone that has less noise especially should not turn off power then play smart phone will cause blindness. Parents should exercise caution "should just all eyes for 15 minutes if you need to use the computer equipment. It should not be used consecutively for a long time too. Use the appropriate term should be located 1-2 hours.
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