In daily life, people with green colorblindness find that the color of the spectrum is different from that of normal people. What normal people see as red, green colorblind people only see as a light black shadow, and what normal people see as orange, yellow and green, green colorblind people feel is a gradual shift from dark yellow to light bright yellow. Green color blindness, in contrast to red color blindness, can only read the red part of a diagram, but not the green part, and is often distinguished in clinical medicine for identification. There are several types of color vision disorders, the most common of which is red-green color blindness. Green color blindness, also known as second color blindness, is a condition in which patients cannot distinguish light green from dark red, purple from cyan blue, or fuchsia from gray, and see green as gray or dark black. Since color blindness and color deficiency are hereditary diseases that can be passed on to offspring, avoiding marriage between close relatives and investigating each other’s family history before marriage, as well as taking measures to reduce the birth rate of color blind offspring, is an effective means of prevention. Color blindness can be inherited, usually more men than women, the incidence of men in China is about 5-8%, women 0.5-1%; Japan is about 4-5% of men, 0.5% of women; Europe and the United States 8% of men, 0.4% of women. Patients have a lot of inconvenience in life and are restricted in choosing a job.