Gabriel Farrell tells the story of blindness historically and from a social point of view. He describes the achievements of sightless persons, and he emphasizes the responsibility of society toward the blind. Blindness may befall anyone, through accident at any age or through the normal degeneration of sight in old age. Farrell stresses the economic provision that must be made for the blind and he tells how the blind have been helped to overcome their deficiencies in various ways.

The author offers a comprehensive record of the work for the blind, including the deaf-blind, through the centuries, and in many countries. He approaches his subject both analytically and historically. Many interesting points are raised for their connection with the subject—such as the fact that the typewriter was invented as the result of searching for a writing machine for the blind. Of course the full story of braille is covered, as are many other educational matters that have been prepared and developed for use by the blind.