Daltonism, Protanopia

Daltonism, or Protanopia, is a congenital color vision disorder in which a person cannot distinguish between red and green colors. This term is often used as a general term for color blindness.

People with protanopia do not perceive long-wavelength red light due to the absence or deficiency of red-sensitive cones in the retina. As a result, red is perceived as dark or black. The color green is also perceived distortedly, since both red and green cones are needed to distinguish it.

Protanopia is the most common type of color blindness, occurring in approximately 1% of men and 0.01% of women. This is due to the fact that the gene responsible for red-sensitive cones is located on the X chromosome.

Color blindness is usually diagnosed in childhood using special tables. Treatment mainly consists of learning to distinguish colors from other shades and using special glasses. People with protanopia can easily work in most professions, but they have difficulty distinguishing between traffic lights, certain shades of clothing, etc. Therefore, it is important to help such people adapt to everyday life.

A congenital disorder of color perception, in which green and red colors are perceived by a person as the same, is called color blindness. This phenomenon occurs in one person out of 12 thousand.

Protanopes are able to distinguish yellow from green, but cannot distinguish between red and green.
Protanopes are characterized by the following features:

1. they cannot distinguish the color red;
2. red color is perceived as some other shade (for example, as green);
3. Protanopes can distinguish green from yellow.