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The fact that this work has reached the tenth edition in six years tells its own tale. As its title indicates, it is concerned only with errors of ocular refraction and the fitting of glasses, ophthalmic diseases and operations being excluded. The work appears to have been thoroughly revised and additions made to keep it scientifically up to date. The metric system is used throughout.
One pleasing feature is that the chapter on retinoscopy has been divided into two parts, explaining the use of concave and plane mirrors, respectively. It thus prevents the beginner from being misled by teachings that are not intended for his particular mirror, for the reason that the movements of the shadows are reversed in the use of the two reflectors.
The Refraction of the Eye. A Manual for Students. JAMA. 1900;XXXV(6):371. doi:10.1001/jama.1900.02460320041032
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