A story for children in Ukrainian, in which the reader learns that it is easy to go blind from the bright sun and snow-white sparkling spaces in the tundra if you do not protect your eyes with light-protective glasses. The book contains a lot of interesting information about the life of reindeer herders: about everyday life, about their work, about everything that we call tundra. The author emphasizes in his hero his humanity, the ability to empathize.