What symptom does color blindness have?

summary

The word color blindness is no stranger to us. Color blindness is a kind of congenital color vision disorder, which is generally manifested as abnormal pigmentation and loss of color vision. Color blindness can be divided into total color blindness and partial color blindness. Here is a detailed introduction, hoping to help you further understand color blindness.

What symptom does color blindness have?

Panchromatic blindness belongs to complete cone cell dysfunction, which is just opposite to night blindness (rod cell dysfunction). Patients prefer darkness and photophobia, and show daytime blindness. In his eyes, the colorful world is gray, just like watching black and white TV, with only light and shade, but no color difference. In addition, there were also some symptoms such as poor vision, amblyopia, central scotoma and swing nystagmus. It is one of the most serious color vision disorders, patients are rare.

Red blindness is also known as the first color blindness. Patients can't distinguish red from dark green, blue from purplish red and purple. Often green as yellow, purple as blue, green and blue mixed into white. There was once a middle-aged man who bought a gray sweater and was ridiculed after wearing it. It turned out that he was a red blind and mistook red for gray. It was also reported in the early years that a red blind patient became a train driver and caused a train collision because he read the wrong signal.

Green blindness is also known as the second color blindness. Patients can't distinguish between light green and dark red, purple and cyan, purple and gray, and regard green as gray or dark black. In an art training class, there was a child who was very good at drawing. He always painted the sun green and the crown and grass brown. It turned out that he was green blind. Clinically, red blindness and green blindness are collectively referred to as red green color blindness. We usually say that color blindness generally refers to red and green color blindness.

matters needing attention

When suffering from color blindness, we must go to the hospital in time for treatment, master the symptoms of color blindness, and go to the hospital regularly for examination. We must distinguish the symptoms and types of color blindness, and strengthen the identification of color, so that we can have a healthy future. When suffering from color blindness, we must not drive on the road, and wait until our eyes recover.