提到色盲,许多人都以为色盲就是不能辨别颜色。其实真正意义上的色盲是极其罕见的,我们平时遇到的色盲患者,绝大部分是红、绿色盲。正常人的眼睛为什么能分辨出各种各样的颜色?这是因为人的眼底视网膜内有一种可以感受红、绿、蓝三种基本颜色的细胞,如果这种细胞功能正常,就可以感受到红、绿、蓝三色,并且根据这三种不同量的光觉刺激而产生不同的色觉。如果这种细胞对红光感受较差或不能感受,就是所谓的红色盲;对绿光感受较差或不能感受;那就是所谓的绿色盲。单纯的红、绿色盲并不是不能辨别颜色,只是感觉光谱中某一段内的颜色与正常人不一样罢了。不管是红色盲还是绿色盲,其辨别颜色的能力与正常人相差并不大,色盲患者的眼前同样是五彩缤纷的世 Mentioned color blindness, many people think that color blindness is unable to distinguish the color. In fact, the true sense of the color blindness is extremely rare, we usually encounter color-blind patients, the vast majority of red and green blind. Why normal eyes can distinguish a wide range of colors? This is because there is a human eye retina can feel the basic colors of red, green and blue cells, if the cells function properly, you can feel Red, green and blue, and produces different color perceptions based on these three different amounts of photopic stimulation. If this cell feels poor or can not feel the red light, it is the so-called red blind; the poor or unpleasant to the green; that is the so-called green blind. Pure red, green, and not blind can not distinguish the color, just feel the spectrum of color within a certain section is not the same as normal. Whether it is red or green blind blind, its ability to distinguish the color difference is not large and normal, the same color eyes are colorful before the world