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This volume is a practical presentation of the principles of refraction, almost devoid of mathematical diagrams yet portraying the fundamental principles of physiologic optics in such a clear manner that the reader must realize their clinical importance. In the preface, the author graciously refers to the texts in which the mathematical proofs of his statements can be had and limits his remarks to the clinical aspect of the subject.
The practical nature of this work is soon discovered, for in the second chapter devoted to eye strain great emphasis is placed on the importance of realizing that the eye is not merely an optical instrument but an integral part of the body and subject to its various ills.
This interesting discourse on the symptomatology of refractive errors is followed by a clear and concise description of the fundamental principles of refraction, and with this knowledge the reader is then
Dunnington JH. The Practice of Refraction. Arch Ophthalmol. 1929;2(6):765. doi:10.1001/archopht.1929.00810020788020
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