Ever since the appearance of the first edition in 1938, Gifford's "Textbook of Ophthalmology" has been one of the most widely used textbooks on the subject for the undergraduate medical student and the general practitioner. After the death of Sanford R. Gifford in 1944, Dr. Adler was selected to prepare future editions; this is the second to appear with his direction. This edition shows considerable improvement over the preceding one in that much irrelevant material has been abbreviated and the section on medical ophthalmology has been increased. Quite properly, the details of surgical technique have been eliminated, but the indications for surgery have been retained. The discussion of ocular motility has been reduced from 50 to 43 pages, and the technical aspects of certain special ophthalmologic examinations, such as slit-lamp biomicroscopy, have wisely been abbreviated. Material on light and vision has been added as have numerous new and better illustrations.