鼠目为何只寸光我们常用“鼠目寸光”来形容目光短浅,这是因为老鼠确实是深度近视眼。高等动物的眼睛里有一层视网膜,上面有两种感觉细胞——圆柱细胞和圆椎细胞。在暗弱的光线下,只有圆柱细胞有感光作用,而强光下主要是圆椎细胞起感光作用。鼠眼的圆柱细胞比圆椎细胞发达,只能 Why do we only use the light of the eye? We often use “eyes” to describe short-sighted eyes, because the mouse is indeed deep myopia. There is a layer of retina in the eyes of higher animals. There are two kinds of sensory cells on the top - cylindrical cells and vertebral cells. In dim light, only the cylindrical cells have a sensitizing effect, while under strong light, the vertebral cells mainly act as sensitization. The cylindrical cells of the mouse eye are more developed than the vertebral cells.