A Hand Book of the Refraction of the Eye

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Excerpt from A Hand Book of the Refraction of the Eye: Its Anomalies and Their CorrectionThe object of this little volume is to present, in a plain and practical form, an explanation of the anomalies of refraction and their correction.It substantially embodies the instruction given to the demonstration classes in the University of Michigan, and While it is intended, primarily, to facilitate the work of Junior students in preparing the subject, the perusal of its pages may prove of benefit to other readers.It has been thought unnecessary to go into the more intricate and scientific demonstrations of the refraction of light, Which are, happily, not of an extremely practical nature.The chief aim has been to go explicitly into every practical detail so that the beginner may not be lost in the labyrinth, and it is hoped that those more advanced may not tire of the minutia.It has been compiled during the hours Which could be spared from active duties, and though the writer has sought to be exact in all his assertions, an occasional inaccuracy may have inadvertently crept in. Any emendations Which my co-laborers may propose will be gratefully received and noted in a subsequent issue.I am under many obligations to my congener, Dr. C. B. Bliss, Who has assisted me very materially in compiling and arranging the contents.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.