Susan R. Barry - Professor Emeritus at Mount Holock College and Doctor of Biological Sciences. From early childhood, suffering from severe strabismus, she saw the world as two-dimensional, and even after surgical correction of the disease, the world did not become voluminous for her. However, she continued to try and at the age of 48 corrected her two-dimensional vision of the world to three-dimensional, which was previously considered impossible in principle. In his book Blind Physiology, the author tells two stories: about a boy who learned to see, and about a girl who learned to hear, and also about how the acquisition of new feelings affects people in different ways. Is it such a blessing to learn to see or hear? How do people live after operations to restore feelings, if their entire familiar world has changed radically? Susan Barry gives answers to such questions, explaining in simple language the mechanisms of the brain and the senses themselves - our eyes and ears.