This most up-to-date volume has a foreword, with current references by Dr. Sheppard. There is a preface by the orthoptist, M. E. Kramer, and in addition a page of acknowledgments. Three important references are lacking. All are of an ancient vintage although the author seems to be totally unaware of them. First is an old volume entitled "Traitement adjuvant du strabisme" by F. Terrien and A. Hubert, printed in Paris in 1902. Second is "Modern Developments in Orthoptic Training," L. L. Mayer, Archives of Ophthalmology8:888, 1932, in which practically all the instruments with the possible exception of later modifications and the Worth four dot test are amply described in a review. Third is "Congenital Reading DisabilityStrephosymbolia," L. L. Mayer, The Journal, April 15, 1933, page 1152, in which all previous references are acknowledged.
Over one third of the text is used to describe anatomy, the visual pathways and