Publisher's Synopsis
Excerpt from Essentials of Refraction
The present edition represents practically an entire rewriting of the book, and the addition of sections on optical principles and hygiene of the eye, thus making a complete manual on all that pertains to the art and science of refraction.
About the Publisher
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This 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.
