小学生眼睛近视的越来越多,这会给以后的学习和生活带来许多的不方便。人们一直认为,视力减退是悄悄地降临的,等到发现视物模糊的时候,就已经晚了。其实,在视力减退之前,近视眼的发生是有前兆的、有信号的。 More and more pupils eyes myopia, which will bring a lot of inconvenience to the future study and life. People always think that vision loss is quietly come, until the discovery of blurred vision, it is already too late. In fact, before the vision loss, the occurrence of myopia is a precursor, a signal.