“Imagine for just one moment that darkness has suddenly fallen around you and you can’t see anything. A person in such a situation, even the strongest, becomes helpless, like a child. On the street, in transport, we can see blind people, and even more often we meet people wearing glasses (for one reason or another). Many people believe that this will not happen to them, but the eye is a very delicate organ. Helmholtz said: “The organ of vision is the best gift of nature. But it was made by a bad mechanic...” Therefore, we must take care of our vision from a young age and at any age, so that until old age we can see well and enjoy all the colors of life. I hope that my book will greatly help you with this.”