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The author has successfully accomplished his "desire to write a book on clinical refraction, employing the theory of ophthalmic optics in such a way that clinical aspects would emerge logically and in orderly sequence from their bases of scientific facts."
The part of the book dealing with the theory of ophthalmic optics is essentially a reprint of the author's book on this subject published in 1928, advantageously amplified in some respects. Retinoscopy and the use of crossed cylinders are much more completely described in the present volume. The author gives a satisfying discussion of the correction to be prescribed after the errors of refraction have been determined. Velonoskiascopy and the duochrome test are described.
Under "The Prescription" he discusses the types of lenses and of bifocal lenses to be prescribed. This is a particularly valuable feature of the book.
A few relatively unimportant criticisms may be made. The author still
Verhoeff FH. Refraction of the Eye. Arch Ophthalmol. 1939;21(3):563–564. doi:https://doi.org/10.1001/archopht.1939.00860030171023
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