色盲也称为色觉障碍,是指由于视网膜的视锥细胞内感光色素异常或不全,以致缺乏辨别某种或某几种颜色的能力。比如不能分辨红色者称为红色盲或第一色盲,在光谱上红色部缩短,绿色看成黄色,紫色看成蓝色;不能分辨绿色者称为绿色盲或第二色盲,在光谱上绿色被看成灰色或暗黑色;不能分辨蓝黄色者为蓝黄色盲,又称第三色盲,整个光谱中只能辨别红绿两色;还有一种完全不能分辨颜色,称全色盲。七彩世界在其眼中是一片灰暗,如同观看黑白电影一般,仅有明暗之分,而无颜色差别。这是色觉障碍中最为严重的一种,但患者非常少见,最常见的是红绿色盲。而对颜 Color blindness, also known as color vision disorders, refers to the ability to distinguish one or several colors due to the abnormal or incomplete photopigment in the retina’s cones. For example, those who can not distinguish red are called red-blind or first-color blind, the red part of the spectrum is shortened, green is seen as yellow, purple is seen as blue, green can not be resolved is called green-blind or second-color blind, As gray or dark; can not distinguish between blue and yellow blue-yellow blind, also known as the third color blind, the whole spectrum can only identify red and green; there is a completely indistinguishable color, said the panchromatic blind. Colorful world in its eyes is a gloomy, as watching black and white movies in general, only the light and shade, without color difference. This is one of the most serious color vision disorders, but patients are very rare, the most common being red-green color blindness. And Yan