Download or read book History of Ophthalmology written by Harold E. Henkes and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the eyeball is indented in total darkness, within less than 200 mil liseconds an oval or quarter-moon shaped spot of light is perceived in the part of the visual field corresponding to the indented region of the retina. In the seconds following, this phosphene extends across the whole visual field and alters in structure during further eyeball indentation. It is then seen as irregular large bright spots of light, finely structured moving light grains ('light nebula') and stationary bright stars. Regular geometrical patterns appear only when both eyes are indented simultaneously [1]. When the eyeball deformation is released, part of the retina again lights up for another one or two seconds and curved light lines are seen following the course of the larger retinal vessels (Fig. 1). In the following we will review the history of this phenomenon, which played an important role during the first 2200 years of vision theories and in the development of models to explain normal vision. 2. Pre-Socratic philosophers, Plato and Aristotle Alcmaeon of Croton (6-5th century B. C. ), who was a member of the Pythagoraean sect and one of the founders of Greek medicine, was the first to describe mechanical deformation of the eyeball leading to light sensa tions. According to Aristotle's pupil Theophrast of Eresos, Alcmaeon report ed that 'the eye obviously has fire within,for when the eye is struckfireflashes out' [2, p. 88].

Download or read book The Publishers Circular and Booksellers Record of British and Foreign Literature written by and published by . This book was released on 1898 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elements of Surgery written by John Syng Dorsey and published by . This book was released on 1818 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Prominent Families of New York written by Lyman Horace Weeks and published by . This book was released on 1898 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publishers Circular and Booksellers Record of British and Foreign Literature written by and published by . This book was released on 1898 with total page 1570 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Books in Series written by and published by . This book was released on 1985 with total page 1858 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1980- issued in three parts: Series, Authors, and Titles.

Download or read book Red Book Atlas of Pediatric Infectious Diseases written by American Academy of Pediatrics and published by . This book was released on 2007 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on key content from Red Book: 2006 Report of the Committee on Infectious Diseases, 27th Edition, the new Red Bookr Atlas is a useful quick reference tool for the clinical diagnosis and treatment of more than 75 of the most commonly seen pediatric infectious diseases. Includes more than 500 full-color images adjacent to concise diagnostic and treatment guidelines. Essential information on each condition is presented in the precise sequence needed in the clinical setting: Clinical manifestations, Etiology, Epidemiology, Incubation period, Diagnostic tests, Treatment

Download or read book Guide to Reprints written by Albert James Diaz and published by . This book was released on 2008 with total page 1220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surgical Instruments in Greek and Roman Times written by John Stewart Milne and published by . This book was released on 1907 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliographical Contributions written by Harvard University. Library and published by . This book was released on 1890 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Publisher written by and published by . This book was released on 1905 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publishers Circular and General Record of British and Foreign Literature and Booksellers Record written by and published by . This book was released on with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Vitamin A Story written by R.D. Semba and published by Karger Medical and Scientific Publishers. This book was released on 2013-07-01 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shows how vitamin A deficiency – before the vitamin was known to scientists – affected millions of people throughout history. It is a story of sailors and soldiers, penniless mothers, orphaned infants, and young children left susceptible to blindness and fatal infections. We also glimpse the fortunate ones who, with ample vitamin A-rich food, escaped this elusive stalker. Why were people going blind and dying? To unravel this puzzle, scientists around the world competed over the course of a century. Their persistent efforts led to the identification of vitamin A and its essential role in health. As a primary focus of today’s international public health efforts, vitamin A has saved hundreds of thousands of lives. But, we discover, they could save many more were it not for obstacles erected by political and ideological zealots who lack a historical perspective of the problem. Although exhaustively researched and documented, this book is written for intellectually curious lay readers as well as for specialists. Public health professionals, nutritionists, and historians of science and medicine have much to learn from this book about the cultural and scientific origins of their disciplines. Likewise, readers interested in military and cultural history will learn about the interaction of health, society, science, and politics. The author’s presentation of vitamin A deficiency is likely to become a classic case study of health disparities in the past as well as the present.

Download or read book Books in Series in the United States written by and published by . This book was released on 1966 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Books in Print written by and published by . This book was released on 1990 with total page 1558 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Books in Print Supplement written by and published by . This book was released on 1984 with total page 1774 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Artificial Intelligence in Ophthalmology written by Andrzej Grzybowski and published by Springer Nature. This book was released on 2021-10-13 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a wide-ranging overview of artificial intelligence (AI), machine learning (ML) and deep learning (DL) algorithms in ophthalmology. Expertly written chapters examine AI in age-related macular degeneration, glaucoma, retinopathy of prematurity and diabetic retinopathy screening. AI perspectives, systems and limitations are all carefully assessed throughout the book as well as the technical aspects of DL systems for retinal diseases including the application of Google DeepMind, the Singapore algorithm, and the Johns Hopkins algorithm. Artificial Intelligence in Ophthalmology meets the need for a resource that reviews the benefits and pitfalls of AI, ML and DL in ophthalmology. Ophthalmologists, optometrists, eye-care workers, neurologists, cardiologists, internal medicine specialists, AI engineers and IT specialists with an interest in how AI can help with early diagnosis and monitoring treatment in ophthalmic patients will find this book to be an indispensable guide to an evolving area of healthcare technology.