初生婴儿视力很差。在外界环境,特别是光线的刺激作用下,到2岁时孩子的视力发育到0.5左右,3～5岁时发育到1.0。这个阶段的视力发育如何,对孩子一生来说是非常重要的。一切妨碍孩子视力发育的环境 Poor vision of newborn babies. In the external environment, especially the stimulation of light, to 2 years old children’s visual acuity to about 0.5, 3 to 5 years old to 1.0. This stage of visual development, for the child’s life is very important. Anything that hinders the child’s eyesight from developing