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Excerpt from Spectacles, and How to Choose Them: An Elementary Monograph
For many years after this discovery, no special ad vancement was made, and the use of Spectacles remained confined to supplying the deficiencies of the eye couse quent on age. During the past half century, however, and especially during the last quarter, the subject has been carefully studied by men eminent in the known sciences. That use which was based on a simple acci dental discover has been supplanted by one controlled by unvarying laws solved by the higher mathematics. Opinions based on the knowledge of past years should be discarded. NO age is now necessarily implied by their use. They may be worn by anyone at some period of life, for one or more of the many affections to Which they give relief.
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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.
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Spectacles, and How to Choose Them: An Elementary Monograph (Classic Reprint)
Print-on-DemandAnbieter: Forgotten Books, London, Vereinigtes Königreich
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Paperback. Zustand: New. Print on Demand. This book, written in 1881, was among the first to clearly organize and synthesize therapeutic knowledge of the human eye and its correction. While spectacles had been used for centuries, their true use and powers were largely misunderstood and often misrepresented. Through clinical research and observations, the author, who was one of the prominent ophthalmic surgeons of his time, aimed to bring clarity to the subject and correct the rampant misunderstandings of the day. The book introduced the then new diopter system of measuring lenses, which is still used today, and provided an in-depth analysis of essential concepts which were later expanded on and remain at the core of corrective eyeglass prescription. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9780282060657_0
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Spectacles, and How to Choose Them: An Elementary Monograph (Classic Reprint)
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9780282060657
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Spectacles, and How to Choose Them: An Elementary Monograph (Classic Reprint)
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9780282060657
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