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In this groundbreaking medical treatise, William Kitchiner offers readers invaluable tips and tricks for improving and preserving their eyesight. Drawing on his extensive experience as a pharmacist and optician, Kitchiner provides practical advice on everything from diet and exercise to proper eye care and lighting. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Excerpt from The Economy of the Eyes: Precepts for the Improvement and Preservation of the Sight; Plain Rules Which Will Enable All to Judge Exactly When, and What Spectacles Are Best Calculated for Their Eyes; Observations on Opera Glasses and Theatres, and an Account of the Pancratic Magnif Explanation of the Plate fronting the Title Fig. I. Is the Spectacle front recommended for Eyes in general; the distance between the centres of the openings which held the Glasses being 2 1-2 inches, i.e. the average distance between the centres of the Eyes. Fig. II. Is a portrait of the Pupil of the Eye when in a state of expansion. See Chapter XII. page 73, and No, X. of the Appendix. Fig. III. The Pupil in its most contracted state. See page 73, &c. Fig. IV. Convenient double Folding Hand Spectacles. See page 20. Fig. V. A Preserver, or the First Sight for Long Sighted Eyes, i.e. a Convex lens of 36 inches focus cut in half to shew its form, c.the thickness of it at the middle and at the margin of it. See page 27. Fig. VI. The 8th Sight, for Long Sighted Eyes or 12 Inches focus. Fig. VII. No.1 Concave, or the First Sight for Short Sighted Persons. See Chapter XIII. page 85. Fig. VIII. No.12 Concave, or the 12th Sight for Short Sighted Persons. 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.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.