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Dr. Cowan's "Refraction of the Eye" is so well known (Arch. Ophth.34:172 [Aug.] 1945) that it needs no comment except to welcome its appearance in a third edition and to state that this new edition has been revised and brought up to date. The book merits its well deserved popularity; as a comprehensive and practical treatise, it is of great service to students of ophthalmology.
Knapp A. Refraction of the Eye.. Arch Ophthalmol. 1948;40(4):481. doi:10.1001/archopht.1948.00900030493009