Excerpt from Pocket Optical Dictionary: Including Pronunciation and Definition of the Words Used in Optometry and Ophthalmology, Together With a Complete Description of the Light Wave Theory, Anatomy of the Eye, Functions and Nerve Supply of the Different Parts, Retinoscope, Opthalmoscope, Tria To the Public: This edition has been compiled with a great deal of care. Realizing that perfection in its full sense has never been attained by mortal man, the author invites the unbiased and conscientious criticism of the readers and users of this Dictionary and hereby earnestly solicits the same to the end that the future editions may profit by the honest convictions of studious oculists, physicians and optometrists. I cannot conclude without expressing my deep sense of obligation to the profession for their kind reception of this work. Feeling the responsibility incurred by those who attempt to teach others, I have spared no amount of labor or cost to render this volume clear, practical and useful. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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.