Today there are more than 124 million people in the world who have lost the ability to see or were born blind to this world. On November 13, 1745, Valentin Hauis was born in France, a famous teacher who founded schools and enterprises for the blind in Paris and St. Petersburg. Every year, on November 13, according to the decision of the World Health Organization, the whole world celebrates the International Day of the Blind. On this day, in many countries around the world, public attention is drawn to the problems of blind people.