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电视、游戏机以及正在走进普通家庭的电脑等,是导致青少年近视眼发生率上升的重要原因之一。 众多研究表明,电脑放出的射线对健康无害,即使连续十年每天在电脑面前也不会得白内障,对视网膜也不会有损害。不过调查也发现,75％的电脑操作人员视力下降或患一种或几种眼病。其病症如下:临时性近视,使用电脑后长达几分钟、甚至几小时的视远处物体模糊不清,有时重影;跟发干或眼睛流泪;跟疲劳;对光线过于敏感。造成上述不适的主要原因有:操作电脑的坐姿不当,屏幕应稍低于人眼,最佳视觉角度是眼视线与水平面夹角为
Television, game consoles, and computers that are entering the average home are one of the major causes of the rising incidence of myopia among adolescents. Numerous studies have shown that computers emit rays that are harmless to the health and that they will not cause damage to the retina even if they do not have cataracts in front of the computer for 10 consecutive days. However, the survey also found that 75% of computer operators have decreased vision or one or more eye diseases. Its symptoms are as follows: temporary myopia, the use of computers for a few minutes, or even hours away from the vision of objects blurred, and sometimes ghosting; dry hair or eyes with tears; with fatigue; too sensitive to light. The main reasons for the above discomfort are: improper operation of the computer sitting position, the screen should be slightly lower than the human eye, the best visual angle is the line of sight and horizontal angle