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The Principles of Refraction: In the Human Eye Based on the Laws of Conjugate Foci (Classic Reprint) - Softcover
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Excerpt from The Principles of Refraction: In the Human Eye Based on the Laws of Conjugate Foci
The conjugate focus is, of course, mentioned often in our treatises and text-books dealing with the optics of ophthalmology, but it is always in a subsidiary way and incidentally, and not as the bed rock upon which the whole fabric of refraction as it pertains to the formation of images rests. It has been borne in upon me, from a long experience in the teaching of medical students, that if we are able to seize and impress upon them some central fundamental law back to which all the phenomena involved can and must be referred for substantiation, we will have rendered their understanding much more logical and therefore easier. Such a fundamental law in refraction I consider the conjugate focus to be.
Applied in this way we have found these laws to be of the greatest assistance in solving all the problems involved in the determination of the optical properties of the eye; but we believe they have a special value in unraveling the intricacies inherent in the complex optical system that lies at the basis of that method of examination known as skiascopy. Much of the confusion that prevails regarding the optical theory of that method is due to the neglect of a proper application of these laws to the requirements of this special case.
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The Principles of Refraction (Classic Reprint)
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Paperback. Condition: New. Print on Demand. This book defines and explains the laws of conjugate foci as they relate to the human eye, and how these principles provide the basis for understanding refraction. The author explores the different optical systems in the eye and their functions and introduces the principal plane, including the principal focus and conjugate foci. The laws of conjugate foci are illustrated through the movements of an object emitting rays, beginning at infinity on the left and going to infinity on the right, exploring different positions of the object and the resulting movements of the conjugate focus. The author also applies these laws to the human eye, explaining the conditions of emmetropia, myopia, and hypermetropia, and additional chapters are dedicated to the conjugate focus in accommodation, ophthalmoscopy, and skiascopy. By examining the conjugate foci formed by the eye's optical systems, this book provides a comprehensive understanding of the principles of refraction. 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. Seller Inventory # 9781332064489_0
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The Principles of Refraction In the Human Eye Based on the Laws of Conjugate Foci Classic Reprint
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9781332064489
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The Principles of Refraction In the Human Eye Based on the Laws of Conjugate Foci Classic Reprint
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PAP. Condition: New. New Book. Shipped from UK. Established seller since 2000. Seller Inventory # LW-9781332064489
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