This interesting little book contains just what its name implies. The first part is a short résumé of the mechanism of sight, the physics of the eye, how the eyes are tested, the cause of nearsightedness and cross-eye, the way glasses are fitted and something as to when they should be used and when not used. The second part takes up some of the more common diseases of the eye such as pink-eye and trachoma. Birth infections, congenital syphilis and accidents and injuries are also discussed. The third part gives the changes that are found in middle life, and the results of age are dealt with, particularly cataract and glaucoma. The book ends with a discussion of the disabilities that are inheritable, such as congenital cataract and color blindness.
One of the most interesting parts of the book deals with the problem that is concerning the world at present, namely,